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Troubleshooting

100

Channel Unit Troubleshooting

Table 31 provides troubleshooting procedures based on indications displayed by the front panel 
LEDs of a channel unit and customer reports.

Table 31.  Channel Unit Troubleshooting

Indication

Problem

Action

FAULT LED 
ON

The processor has detected a 
fault.

Remove and reinsert the channel unit.  If the FAULT LED does not extinguish, 
replace the channel unit.

Troubleshooting based on customer-originated trouble reports

No Dial tone, 
Can Not Dial

•

faulty RT or COT 
channel unit

•

facility short/open

•

CO switch problem

•

faulty customer 
instrument/wiring

1

Verify that dial tone is present at the CO. (COT Looking-In or Bridging).

2

Lift the subscriber pair at the network interface.  If dial tone is present and 
you can place a call, refer the problem to the customer per local practice.
(RT Looking-In or Bridging).

3

If the problem still exists, refer the problem to the CO switch.

4

If you cannot hear dial tone or cannot place a call at the network interface 
(with the subscriber pair lifted), check for dial tone at the RT.  If dial tone 
is present, check the pair between the RT and the network interface.  If no 
dial tone is present, replace the RT channel unit.

5

If the problem still exists, reinsert the original RT channel unit and replace 
the COT channel unit.  Test for operation.

Phone Does 
Not Ring

•

high-resistance 
subscriber line short

•

faulty RT or CO channel 
unit

•

loop length too long

•

CO  switch

1

Lift the subscriber pair at the network interface.  If ringing is present, refer 
the problem to the customer per local practice.

2

If ringing is not present, check for ringing at the RT.  If ringing is present, 
check the pair between the RT and the network interface.  If no ringing is 
present, replace the RT channel unit.  If ringing is still not present, check a 
circuit on another channel unit.  If ringing is still not present, replace the 
line unit.

3

If ringing is still not present at the RT, reinsert the original channel unit and 
line unit.  Test for ringing at the COT.

4

Test for ringing into the COT from the  CO switch.  If no ringing is present, 
refer the trouble to the CO switch.  If ringing is present, replace the COT 
channel unit.  Test again for ringing at the network interface.  If ringing is 
still not present, contact PairGain “Technical Support” on page 113.

5

Verify the resistance of the copper loop between the RT Enclosure and the 
network interface is less than 530 

Ω

.

Phone Does 
Stop Ringing

•

faulty subscriber 
instrument

•

faulty RT channel unit

•

loop length too long

1

Test for ring trip at the network interface.  If the ringing is tripped, refer the 
trouble to the customer per local practice.

2

If the ringing is not tripped, test for tripping at the RT.  If ring trip does 
occur, check the loop for excessive length.  If ring trip does not occur, 
replace the RT channel unit.  If ring trip still does not occur, contact 
PairGain “Technical Support” on page 113.

3

Verify the resistance of the copper loop between the RT Enclosure and the 
network interface is less than 530 

Ω

.

Содержание PG-Flex

Страница 1: ...nel Subscriber Carrier System Provisioning Manual PairGain Technologies Inc Engineering Plant Series Technical Manual Section 363 125 100 01 Revision History of this manual Revision 01 March 18 1998 A Initial Release ...

Страница 2: ...anguage without prior written consent of PairGain Technologies Inc Tustin California USA The information in this publication is believed to be accurate in all respects However PairGain Technologies cannot assume responsibility for any consequences resulting from the use thereof The information contained herein is subject to change Revision to this publication or new additions to it may be issued t...

Страница 3: ...ul interference to radio communication However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures 1 Reorient or relocate the ...

Страница 4: ...gh the craft maintenance port defines screen menus and display structure and provides navigation instructions through these menus Provisioning Your System provides procedures on how to configure your PG Flex system and defines the available settings for each option Performance Monitoring provides procedures for viewing PG Flex system status information Troubleshooting provides procedures to troubl...

Страница 5: ...List 1 4 FAU 728 List 2 4 PGTC Interface Unit 5 COT Line Unit 5 COT Channel Units 6 COT POTS Channel Units 6 ISDN Channel Units 7 Remote Terminal Equipment 8 RT Enclosure 8 RT Line Units 9 RT Channel Units 10 Subscriber Drop Testing 11 Channel Unit Signatures 11 Metallic Bypass Pair 12 Craft Port Access 13 Alarms 14 Major Alarm 14 Minor Alarm 14 Information Alarm 14 Faults 15 CONTENTS ...

Страница 6: ...und 40 Connect the CO Battery 41 Connect the HDSL Lines 42 Connect Bypass Pairs 43 Individual Bypass Pairs 43 Shared Bypass Pairs 43 Connect the Alarms 45 Connect the Composite Clock 46 Connect the Subscriber Lines 47 Auxiliary Power Pairs 48 Power Up the System 49 Verify System Voltages 49 Install the Alarm Unit or the PGTC 50 Install the Line Units 51 Install the Channel Units 52 TERMINAL MANAGE...

Страница 7: ...System Status 88 Channel Status 89 HDSL Status 90 Alarm History 92 ISDN Performance Monitoring 95 TROUBLESHOOTING 97 Troubleshooting Using Front Panel LED Indications 98 Line Unit Troubleshooting 98 FPI 729 or FAU 728 List 2 Troubleshooting 99 Channel Unit Troubleshooting 100 PG Flex Metallic Test Access 102 Manual Subscriber Line Metallic Access 102 Test Desk Activation 102 Automatic Line Metalli...

Страница 8: ...mance History A 13 7 Day Performance History A 14 Alarm History A 14 COT Shelf Alarm History A 15 RT Shelf Alarm History A 15 Span Alarm History A 16 ISDN Performance Monitoring Menu A 17 Select New Card and Channel A 18 PM Error Count A 18 PM Threshold Alert Info A 20 Setup Menu Screens A 22 System Settings A 22 Time Slots Assignment A 27 Channel Configuration A 28 POTS Loop Ground Start A 29 ISD...

Страница 9: ...he 19 inch shelf supports up to two systems while the 23 inch shelf supports up to four systems An alarm unit or Pair Gain Test Controller PGTC interface unit common to all systems installed in a shelf provides an interface for maintenance alarm relays and metallic access to the remote subscriber lines The plain old telephone service POTS channel units use a pulse code modulation PCM encoding sche...

Страница 10: ...PG Flex System Overview 2 Figure 1 Typical PG Flex Configuration 23 Shelf shown ...

Страница 11: ...tems and the 23 inch shelf may be equipped with a maximum of four systems Line channel and alarm units are installed from the front of the shelf interconnections are located on the passive backplane at the rear of the shelf A Plexiglass cover is installed on the rear of the shelf to prevent damage to wire wrap terminations and to protect the technician from high voltages Figure 2 Two 24 Channel PG...

Страница 12: ...n an FCS 718 19 shelf or in the System 1 or 2 positions in an FCS 719 23 shelf FAU 728 List 2 The FAU 728 List 2 Alarm Unit provides one test jack which is shared by all the COT line units installed in the PG Flex shelf Additionally the Alarm Unit serves as a Craft Port Multiplexer for all COT line units installed in the shelf Upon detection of the List 2 Alarm Unit the Craft Maintenance Port conn...

Страница 13: ...ns where digital data service cards ISDN DDS are used in the shelf and the PGTC function is required The FPI 729 is used to provide an 8 kHz sync signal to all COT line units installed in the COT Shelf The 8 kHz sync signal is derived from the Central Office supplied Composite Clock The Alarm Unit reports a loss of the Composite Clock signal The severity of the failure is user definable Major Mino...

Страница 14: ...analog interfaces at both the CO and RT locations Three channel units are required for a 24 channel system The channel units provide the following features converts analog signals to 64 kbps µ Law or A Law PCM digital format detects ringing voltage detects 12 kHz and 16 kHz meter tones detects forward disconnect detects subscriber drop metallic access signal provides loop closure provides on hook ...

Страница 15: ...ealing current and performance monitoring on each channel Line termination LT in the CO occurs at the ISDN switch The channel unit provides the line unit termination at the RT and the subscriber site has the Network Termination NT1 Figure 4 Typical ISDN Arrangement The main features of the ISDN channel unit are four ISDN U interfaces mechanized loop testing MLT compatible and metallic test access ...

Страница 16: ...he enclosures provide termination points for subscriber circuits power and metallic bypass pair AMP Quiet Front or RayChem terminations with internal gas tube protectors are provided on the backplane for High bit rate Digital Subscriber Line HDSL and Bypass connections Optionally add AMP Quiet Front termination or RayChem terminations for auxiliary power pairs when used with a PG Flex doubler The ...

Страница 17: ...ted by PG Flex two copper pairs are required between the CO and the RT to support the HDSL transport and provide power to the RT As shown in Figure 6 both pairs are used for simplexing the power between the COT and RT Figure 6 Connections Between the COT and RT For subscriber drop testing a third copper pair is required between the COT and RT to provide a metallic path between the selected subscri...

Страница 18: ... voltage generates forward disconnect generates metering tones 12 kHz 16 kHz detects an off hook or ring tip condition connects a subscriber loop to a metallic test pair protects against secondary surges A status LED is associated with each line to indicate whether the line is off hook idle ringing or being tested A common fault LED indicates a general fault has been detected on the unit Figure 7 ...

Страница 19: ...gh the central office channel unit of the selected subscriber Momentary placement and removal of 116 Vdc on the tip conductor is recognized by PG Flex as a metallic access request PG Flex provides the metallic test path Figure 8 while the termination of the test pair is dependent on whether a Pair Gain Test Controller PGTC Interface Unit is installed When 116 Vdc is momentarily placed then removed...

Страница 20: ...etallic Test Access Through COT Channel Unit When testing subscriber drops through the metallic bypass pair the length and quality of the bypass pair must be taken into consideration when analyzing the measurement results Only one subscriber circuit in a PG Flex shelf can be accessed at a time when an FPI 729 List 1 or an FAU 728 List 2 is installed If an FAU 728 List 1 is installed one subscriber...

Страница 21: ...ck to the local test system through the CO switch the metallic connection appears on the PGTC interface or alarm unit test jack As shown in Figure 9 this method of metallic access does not require a local test system and provides the technician with a means to perform metallic testing of the subscriber drop without traveling to the remote location Figure 9 Metallic Test Access Using the Craft Port...

Страница 22: ...d on a loss of 2 to 23 customer service lines or to indicate non service affecting failures Minor Alarms occurring within the PG Flex system are propagated up to the COT line unit The Fault LED illuminates at the respective line unit nodes and also at the COT FAU FPI indicating a minor alarm condition Upon detection of a minor alarm condition PG Flex operates the minor alarm audible and visual rel...

Страница 23: ...be generated Propagation of the fault condition up to and including the COT line unit is the responsibility of the respective RT line unit The exception to this would be the HDSL Faults which are normally passed to the COT line unit with the normal HDSL performance monitoring information A fault may cause the following alarms Major Minor Information Alarms or none depending on how the system is co...

Страница 24: ...PG Flex System Overview 16 ...

Страница 25: ...l office terminal equipment installation page 37 PG Flex System Compatibility Overview The following section is divided into two topics PG Flex Product List on page 18 is an inventory of PG Flex line units channel units and support cards Line Unit Compatibility on page 20 defines the COT and RT line unit combinations that work together and describes the options that each combination supports For p...

Страница 26: ...ine Unit POTS LS GS ISDN PGTC 150 1342 31 FRL 742 3A 24 Channel RT Line Unit POTS LS GS ISDN Doubler PGTC Central Office Terminal POTS Cards 150 1301 01 FLC 701 1 4 Channel POTS COCU µ Law 150 1301 02 FLC 701 2 4 Channel POTS COCU µ Law 150 1303 01 FLC 703 1 8 Channel POTS COCU µ Law 150 1303 02 FLC 703 2 8 Channel POTS COCU µ Law 150 1303 03 FLC 703 3 8 Channel POTS COCU µ Law PGTC 150 1303 04 FL...

Страница 27: ...19 4B 23 COT Shelf Amphenol Split Power Baffle PG Flex RT Enclosures 150 1365 02 FRE 765 2 24 Channel RT Enclosure Amphenol 150 1365 21 FRE 765 2A 24 Channel RT Enclosure Prot Strips IDT 150 1365 22 FRE 765 2B 24 Channel RT Enclosure 25 25 pr PVC Cable Stub 150 1365 24 FRE 765 2D 24 Channel RT Enclosure Prot Strips 25 6 25 pr Non Filled Cable Stubs 150 1365 25 FRE 765 2E 24 Channel RT Enclosure Pr...

Страница 28: ...COT and RT line unit combinations work together When a single Craft port interface per shelf is desired there are two options the FPI 729 and the FAU 728 List 2 The FPI 729 is used where PGTC functions are required and the FAU 728 List 2 is used where PGTC functions are not needed Table 3 Service Options and Compatibility Service go to Loop Start POTS Only service Table 4 on page 21 Loop Start POT...

Страница 29: ... 703 List 3 FLC 703 List 4 FRC 751 List 1 FRC 753 List 2 FRC 753 List 4 4 8 8 X X X FAU 728 List 1 X RT Looking In and RT Bridging line access functions are not supported FLL 712 List 2 FRL 742 List 1 FLC 701 List 2 FLC 703 List 3 FLC 703 List 4 FRC 751 List 1 FRC 753 List 2 FRC 753 List 4 4 8 8 X X X FAU 728 List 1 X RT Looking In and RT Bridging line access functionsarenotsupported Configuration...

Страница 30: ...nance Bypass pair when the system is not in test FLL 712 List 3 FRL 742 List 2 FLC 701 List 2 FLC 703 List 3 FLC 703 List 4 FRC 751 List 1 FRC 753 List 2 FRC 753 List 4 4 8 8 X X X FAU 728 List 1 X X Configuration fault alarm time slot allocation fault are not supported on the RT line unit menus 48 Vdc wetting voltage isapplied to the Ring lead of the Maintenance Bypass pair when the system is not...

Страница 31: ...cation faults FLL 712 List 3 FRL 742 List 3 FLC 703 List 3 FLC 703 List 4 FRC 753 List 2 FRC 753 List 4 8 8 X X FAU 729 List 1 X X X Configuration fault alarm time slot allocation fault are supported 48 Vdc wetting voltage isapplied to the Ring lead of the Maintenance Bypass pair when the system is not in test Table 6 PG Flex Line Unit Compatibility Matrix Loop Start and or Ground Start POTS Servi...

Страница 32: ...ce Bypass pair when the system is not in test Table 8 PG Flex Line Unit Compatibility Matrix ISDN Service with or without Loop Start and or Ground Start POTS Service with PGTC Testability Line Unit Combination Compatible Channel Units Common Equipment CO RT CO RT Channel LS LS GS ISDN 4Tel PGTC CC Mux Comments FLL 712 List 3 FRL 742 List 3 FLC 706 List 1 FLC 703 List 3 FLC 703 List 4 FRC 756 List ...

Страница 33: ...to two gauge changes except for stubbing or fusing total bridge taps can not exceed 2 5 kft No single bridge tap may exceed 2 0 kft The distance limitation for HDSL transmission is based on a maximum signal attenuation of 35 dB at 196 kHz Since signal attenuation decreases as cable size increases the larger the gauge that is 19 AWG vs 26 AWG the greater the distance between the COT and the RT Tabl...

Страница 34: ...ts 1 Mount the Remote Terminal Enclosure page 27 Local policy determines the terminal installation sequence size and capacity of the shelf If the RT line unit is installed first HDSL initializing attempts are not accessible until the COT is powered 2 Connect the HDSL Lines page 30 Use local practices to resolve T1 trouble 3 Connect the Bypass Pair page 31 Local policy determines testing strategy s...

Страница 35: ... 765 to the bracket Do not install any cabling until the FRE 765 is securely mounted 1 Mount the pole bracket to the pole with screws or nails not provided Position the screws or nails through the small holes near the top and bottom edges of the bracket Figure 10 Figure 10 Mounting the Pole Bracket 2 Align the flanges on the RT enclosure with the large holes top and bottom on the pole bracket Moun...

Страница 36: ...Installing PG Flex System Hardware 28 3 Insert the 3 8 lag screws supplied in the Pole Mount Kit through the RT enclosure flanges and the pole bracket then tighten Figure 11 Mounting the RT Enclosure ...

Страница 37: ...bottom of the enclosure 2 Connect one end of the chassis ground wire to the grounding bar 3 Connect the other end of the chassis ground wire to a suitable ground termination point ground rod or cold water pipe 4 Tighten the strain relief around the wire Figure 12 Chassis Ground Wiring Use 6 AWG wire to ensure a good ground connection to the FRE 765 RT enclosure ...

Страница 38: ...osure 2 Terminate HDSL Pair 1 on the Quiet Front terminals HDSL_1_T Tip and HDSL_1_R Ring 3 Terminate HDSL Pair 2 on the Quiet Front terminals HDSL_2_T Tip and HDSL_2_R Ring 4 Secure with a cable tie to the bracket near the cable entrance Figure 13 HDSL Pair Use 6 AWG wire to ensure a good ground connection to the FRE 765 RT enclosure ...

Страница 39: ...f on the bottom of the enclosure 2 Terminate the bypass pair on the Quiet Front terminals BYPASS_T and BYPASS_R 3 Use a cable tie to secure to the bracket near the cable entrance Figure 14 Bypass Pair Termination Do not connect metallic bypass pairs between PG Flex systems or to other digital loop carrier DLC systems ...

Страница 40: ...lane Shaded terminations are used only with 8 Channel POTS or 4 Channel DDS Units Do not connect metallic bypass pairs between PG Flex systems or to other digital loop carrier DLC systems Table 11 Subscriber Terminations for List 4A 12 24 channel systems Subscriber Protector Channel Unit Circuit Connector Pair Strip Socket 1 TB1 1 PB1 1 2 TB1 2 PB1 2 3 TB1 3 PB1 3 1 4 TB1 4 PB1 4 5 TB1 5 PB1 5 6 T...

Страница 41: ...h subscriber line installed see Figure 15 Refer to Table 11 on page 32 for protector socket assignments Figure 15 Installing Five Pin Protector Plugs The installer must provide suitable protection for the subscriber drops Do not connect metallic bypass pairs between PG Flex systems or to other digital loop carrier DLC systems ...

Страница 42: ...for Line 1 and Line 2 turn on 2 Verify the following front panel indications after the system powers up and establishes HDSL synchronized communications and when no calls are in progress POWER is on turns off after about two minutes but pressing the ACO button will turn it back on LOOP 1 SYNC is on LOOP 1 MARGIN is off LOOP 2 SYNC is on LOOP 2 MARGIN is off TEST is off FAULT is off Do not connect ...

Страница 43: ...e above sequence refer to the troubleshooting section 2 Provision the channel unit as described in the Channel Configuration on page 81 For each channel provisioned select loop start or ground start 3 Place a connection from the subscriber interface to the RT termination Do not connect metallic bypass pairs between PG Flex systems or to other digital loop carrier DLC systems Observe normal electro...

Страница 44: ...Installing PG Flex System Hardware 36 Figure 16 Line Unit and Channel Unit Installation Locations ...

Страница 45: ... practices to resolve HDSL trouble 4 Connect Bypass Pairs page 43 Local policy determines testing strategy so this is an optional step 5 Connect the Alarms page 45 Local policy indicates termination points for alarm leads 6 Connect the Composite Clock page 46 This is required only when ISDN channel units are installed A building integrated timing supply BITS or equivalent clock source is recommend...

Страница 46: ... 24 for line unit compatibility 13 Install the Channel Units page 52 Select type of channel unit using the following factors number of channels required size of the shelf installed timeslots available type of service required Loop Start POTS only Loop Ground Start POTS ISDN Repeat this step until all channel units are installed in the COT shelf and RT terminals Table 12 Installing Central Office T...

Страница 47: ...ex COT shelf mounts in a standard 23 inch CO equipment bay The shelf has a mounting height requirement of 8 75 inches 1 Align the shelf Figure 17 universal mounting brackets with the four vertical mounting holes 2 Install the mounting screws Figure 17 Mounting the FCS 719 COT Shelf ...

Страница 48: ...nd of the frame ground wire to the grounding lug G1 frame ground 2 Connect the other end of the frame ground wire to the CO ground termination point Figure 18 Connecting the Frame Ground Follow the provisions of the current edition of the National Electric Code for wiring external to the PG Flex product s Use 12 AWG or larger wire or multiple wires of a smaller gauge to ensure good power connectio...

Страница 49: ... wire for the CO battery return B to TB3 RTN_B termination point Connect the CO battery return wire from TB4 on the COT shelf to the CO battery return termination point Connect the CO battery return wire from TB3 on the COT shelf to the CO battery return termination point Connect the CO battery wires from TB1 48V_A and TB2 48V_B on the COT shelf to the equipment bay fuse panel termination points 2...

Страница 50: ... n 2 Connect HDSL Pair 2 onto wire wrap pins HDSL_n_T2 Tip and HDSL_n_R2 Ring on the shelf for system n 3 Repeat steps 1 and 2 for each system installed Figure 20 Connecting the HDSL Lines For the following procedure n is 1 for System 1 2 for System 2 3 for System 3 and 4 for System 4 For ease of identification and added safety red vinyl caps provided should be installed over the HDSL wire wrapped...

Страница 51: ...d Bypass Pairs To cascade bypass pairs between PG Flex systems do the following 1 Connect the metallic bypass pair from the MDF to wire wrap posts BYPASS_n_T Tip and BYPASS_n_R Ring on the first COT shelf in the cascade 2 Connect the metallic bypass pair BYPASS_n_T Tip and BYPASS_n_R Ring on the first COT shelf in the cascade to the next bypass pair in the cascaded system 3 Connect the INHIBIT lin...

Страница 52: ...Installing PG Flex System Hardware 44 Figure 21 Connecting the Metallic Bypass Pair ...

Страница 53: ...or minor shelf alarm is active MAJ_AUD 4 5 6 Indicates a major alarm The alarm can be silenced using the ACO button Connect this relay to the major alarm audible indicator of the CO alarm system MAJ_VIS 7 8 9 Indicates a major alarm This alarm cannot be disabled Connect this relay to the major alarm visual indicator of the CO alarm system MIN_AUD 10 11 12 Indicates a minor alarm The alarm can be s...

Страница 54: ...the primary composite clock leads from the master clock source in the CO to CC1_TIP and CC1_RING wire wrap pins on the backplane 2 Connect the secondary composite clock leads from the master clock source in the CO to CC2_TIP and CC2_RING wire wrap pins on the backplane Figure 22 Connecting the Composite Clock and Alarms If the composite clock is connected it must be terminated by connecting a jump...

Страница 55: ...ns Channel Unit Circuit Conn Pn Tip Conn Pn Ring Tip Ring 1 26 1 WH BL BL WH 2 27 2 WH OR OR WH 3 28 3 WH GN GN WH 1 4 29 4 WH BN BN WH 5 30 5 WH SL SL WH 6 31 6 RD BL BL RD 7 32 7 RD OR OR RD 8 33 8 RD GN GN RD 1 34 9 RD BN BN RD 2 35 10 RD SL SL RD 3 36 11 BK BL BL BK 2 4 37 12 BK OR OR BK 5 38 13 BK GN GN BK 6 39 14 BK BN BN BK 7 40 15 BK SL SL BK 8 41 16 YL BL BL YL 1 42 17 YL OR OR YL 2 43 18...

Страница 56: ...ry power pair 1 to PWR_1_T1 Tip and PWR_1_R1 Ring for system n 2 Wire wrap auxiliary power pair 2 to PWR_2_T2 Tip and PWR_2_R2 Ring for system n 3 Repeat steps 1 and 2 when required for systems 2 3 and 4 Figure 23 Installing the Auxiliary Power Pairs For ease of identification and added safety red vinyl caps provided may be installed over the auxiliary power pairs wire wrapped pins ...

Страница 57: ... RTN_A screw terminals on the COT shelf 2 When the COT shelf is split powered verify that there is a minimum of 42 Vdc and a maximum of 56 Vdc between the TB2 48V_B and TB3 RTN_B screw terminals on the COT shelf 3 Visually verify the HDSL lines are terminated properly and with the correct polarity 4 Verify that the HDSL lines are dry a There should be 0 Vdc between the Tip and Ring Tip and Ground ...

Страница 58: ...ot connect metallic bypass pairs between PG Flex systems or to other DLC systems To install the alarm unit or PGTC interface into a List 1 or List 4 FCS 718 or FCS 719 PG Flex COT shelf you must terminate the composite clock using a 130 ohm to 135 ohm resistor Refer to Connect the Composite Clock on page 46 Observe normal electrostatic discharge precautions when handling electronic equipment Do no...

Страница 59: ...ications and when no calls are in progress POWER is on LOOP 1 SYNC is on LOOP 1 MARGIN is off LOOP 2 SYNC is on LOOP 2 MARGIN is off TEST is off FAULT is off 3 Measure the following voltages on the COT shelf backplane 130 Vdc 10 between the HDSL_T1 pin and chassis ground 0 Vdc to 120 Vdc between the HDSL_T2 pin and chassis ground 4 Perform system setup if not previously accomplished refer to Provi...

Страница 60: ...sequence refer to the troubleshooting section 2 Provision the channel unit as described in the provisioning section 3 Place a cross connect jumper from the CO to the appropriate COT shelf termination for the circuit s selected An FPI 729 List 1 PGTC Interface Unit or an FAU 728 List 2 Alarm Unit must be installed at all times when ISDN channel units are installed These units provide the composite ...

Страница 61: ...Installing the Central Office Terminal Equipment 53 Figure 24 Card Locations for a 19 COT Shelf Figure 25 Card Locations for a 23 COT Shelf ...

Страница 62: ...Installing PG Flex System Hardware 54 ...

Страница 63: ...craft maintenance port on the Pair Gain Test Controller Interface Unit FPI 729 List 1 or Alarm Unit FAU 728 List 2 Management Functions The terminal management function allows the technician to do the following functions view system status set configuration parameters metallic access to subscriber circuits monitor system performance obtain an inventory report A password may be required for system ...

Страница 64: ...ight through connector are listed in Table 15 Cable Connections The DB 9 connector on the front panel of the line unit alarm unit or PGTC interface allows you to connect your system to an ASCII terminal or a PC running terminal emulation software with a standard RS 232 cable Figure 26 shows the cable connections between the front panel connector and a DTE DB 9 or DB 25 connector Figure 26 DCE to D...

Страница 65: ...unit or the PGTC interface front panel Figure 27 If the PG Flex system does not have an alarm unit or PGTC interface installed connect the RS 232 cable to the appropriate system line unit Figure 28 2 Configure your terminal to the following communications settings 1200 to 9600 baud 9600 baud recommended No Parity 8 data bits 1 stop bit Hardware Flow Control Off Figure 27 Connecting an ASCII Termin...

Страница 66: ...Terminal Management 58 Figure 28 Connecting an ASCII Terminal to a Line Unit ...

Страница 67: ...iguration is set OFF for Carrier Detect CD override This causes the modem to send the CD signal when it connects with another modem and to drop CD when it disconnects If set ON the line unit connection functions properly but does not log out properly when disconnected Set the modem as follows 8 data bits 1 stop bit no parity Using Data Carrier Detect DCD from the modem ensures that the line unit l...

Страница 68: ...scription of menu options and definitions Figure 30 PG Flex Main Menu Display Structure System Status Status Channel Status HDSL Status Alarm History ISDN Performance Monitoring Login Main Menu Connect to System System Setup Setup Time Slots Assignment Channel Configuration POTS Loop Ground ISDN Channel Setup Start Setup Metallic Access Maintenance ISDN Loop Back Inventory System Time 1st time log...

Страница 69: ...e HDSL span You can view either the 24 hour or 7 day performance history Alarm History to show the status of system alarm conditions Examples of alarm conditions are COT Shelf Alarm History RT Shelf Alarm History and Span Alarm History ISDN Performance Monitoring to show the following conditions PM Error Count and PM Threshold Alert Info B Setup Select the Setup option from the Main Menu to view t...

Страница 70: ...rd to navigate through the menus Selecting an Option From the ASCII terminal select an options as follows 1 Type the letter of your selection then press The screen prompts you for specific information 2 Type the information following the instructions on the screen then press 3 Type to return to the Main Menu Table 17 Key Functions Key Function Log out from the Main Menu Executes commands or select...

Страница 71: ... on and off of your PG Flex through the line unit page 72 Setting system parameters page 75 Viewing time slot assignments page 80 Configuring channel unit settings page 81 Configuring ISDN channel settings page 83 This section covers the basic options to configure a PG Flex system Refer to Performance Monitoring on page 87 for performance and status information and refer to Screen Menus and Defini...

Страница 72: ...OFF FPI 729 List 1 or FAU 728 List 2 Front Panel Indications Verify the following front panel indications POWER is ON MAJOR ALARM in OFF MINOR ALARM in OFF BUSY is OFF FAULT is OFF ALARM CUTOFF is OFF Channel Unit Front Panel Indications Verify the channel unit POTS or ISDN front panel indications ACTIVE indicators are OFF FAULT is OFF Before you can provision a PG Flex system make sure that HDSL ...

Страница 73: ...t to each system individually through the craft maintenance port of that system s line unit You are then prompted for a password when you log onto each system Figure 31 shows the logon sequence for accessing a PG Flex system through an alarm unit or PGTC interface Figure 31 Logon Sequence Through an Alarm Unit or PGTC Interface Figure 32 shows the logon sequence for accessing a PG Flex system thro...

Страница 74: ...ress the several times to start the autobaud feature This establishes connection and displays the following FPI logon screen 2 Press or type your password For security reasons the password is displayed as characters in your terminal screen If your PG Flex system does not have an Alarm unit or PGTC interface installed proceed to Logging On to a Line Unit on page 72 The Password default is This can ...

Страница 75: ...ou can access each PG Flex system COT 1 through COT 4 and access the FPI Configuration menu option 5 To access PG Flex system 1 go to Accessing the Main Menu through the FPI Unit on page 68 To access the FPI Configuration menu go to Accessing the FPI Configuration Menu on page 70 Enter PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL Shelf ID PG Flex 24 Channel System CURRENT ALARMS NONE MAIN MENU 1 Con...

Страница 76: ...ex system initiate or view test options and view status information Table 18 on page 69 describes the options associated with these four Main Menu options A through D 2 To exit the PG Flex system press then press 1 Enter 12 JUN 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 05 09 16 SYSTEM ID PG Flex 24 Channel System SYSTEM 1 CURRENT STATUS OK LOGGED IN COT ALARMING TERMINAL NONE CHREV SPAN 1 MAIN...

Страница 77: ... Alarm History to show the status of system alarm conditions Examples of alarm conditions are COT Shelf Alarm History RT Shelf Alarm History Span Alarm History ISDN Performance Monitoring to show the following conditions PM Error Count PM Threshold Alert Info B Setup Select the Setup option from the Main Menu to view the current setup and to set or change the following configurable items System Se...

Страница 78: ...anufacturing Information Information Description Type Displays the type of unit Model Displays the FPI model number List Displays the FPI unit list number Issue Displays the FPI Issue number CLEI Code Displays the CLEI code P1 Tag Displays the manufacturing ID S W Displays the firmware version 5 Enter PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL Shelf ID PG Flex 24 Channel System CURRENT ALARMS NONE...

Страница 79: ... secondary source A composite clock is required for ISDN and DDS services OFF No alarms are generated when a composite clock signal is not present MINOR A minor alarm is generated when a valid composite clock is not present MAJOR A major alarm is generated when a valid composite clock is not present This parameter is stored in the FPI card NVRAM and therefore does not change when power is cycled o...

Страница 80: ...nd displays the following logon screen 2 Press or type your password For security reasons the password is displayed as characters in your terminal screen Each system in a shelf up to four systems in a 23 shelf is configured individually Therefore when you log on to each of the systems in a shelf one at a time you set the parameters for each system separately Spacebar 01 SEP 97 PAIRGAIN TECHNOLOGIE...

Страница 81: ...ff then on Enter the new system time in hours HH and minutes MM seconds SS are optional This screen does not appear the next time you log on unless the power has been turned off 01 SEP 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 00 01 08 SYSTEM ID PG Flex 24 Channel System SYSTEM 1 SYSTEM TIME System Time has NOT been initialized COT ENTER NEW SYSTEM TIME HH MM SS ...

Страница 82: ...iew test options and view status information Table 18 on page 69 describes the options associated with these four Main Menu options A through D To exit the PG Flex system press then press 12 JUN 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 05 09 16 SYSTEM ID PG Flex 24 Channel System SYSTEM 1 CURRENT STATUS OK LOGGED IN COT ALARMING TERMINAL NONE CHREV SPAN 1 MAIN MENU A STATUS B SETUP C MAINTENA...

Страница 83: ...ON D POTS LOOP GROUND START SETUP E ISDN CHANNEL SETUP CTRL X Main Menu e X it COT ENTER COMMAND a A Enter 01 SEP 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 03 39 52 SYSTEM ID PG Flex 24 Channel System SYSTEM 1 SYSTEM SETTINGS A SYSTEM DATE 01 SEP 97 B SYSTEM TIME 03 39 52 C SYSTEM ID PG Flex 24 Channel System D SET PASSWORD E AUTO LOGOUT TIME min 5 DISABLED 5 30 60 F METERED TONE FREQUENCY kHz...

Страница 84: ...emoved and reinserted C System ID all spaces The System ID is supplied to indicate the physical location of the PG Flex system CO or RT terminal Each PG Flex system should have a unique System ID The default for System ID is blank all spaces This can be left blank or set to any desired name of 24 or fewer characters including spaces This name can be any mixture of alphanumeric characters including...

Страница 85: ...alues can be set to one of the following parameters 20 The ring generator is set to 20 Hz 25 The ring generator is set to 25 Hz 30 The ring generator is set to 30 Hz H HDSL ES Alarm Threshold DISABLED Sets the number of Error Seconds required before a minor alarm is generated dependent on the setting of the Alarm on HDSL Threshold parameter The count of Error Seconds is reset to zero when the rese...

Страница 86: ... on Configuration DISABLED Each channel card in a PG Flex system must have a corresponding channel card type at the opposite node A mismatch condition results when a card does not have the correct corresponding card at the other end due to channel unit removal type mixing or failure Note if a mismatch condition exists between the CO and RT replace the corresponding channel with a matching channel ...

Страница 87: ... the PM thresholds are exceeded The values can be set to the following parameters DISABLED A minor alarm does not occur if any of the ISDN PM thresholds are exceeded ENABLED A minor alarm occurs if any of the ISDN PM thresholds are exceeded Table 21 System Settings Menu Options Continued Type Letter Parameter Default Value Function ...

Страница 88: ... FEB 96 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 03 41 20 SYSTEM ID PG Flex 24 Channel System SYSTEM 2 TIME SLOTS ASSIGNMENT TIME CHANNEL TIME CHANNEL TIME CHANNEL TIME CHANNEL SLOT ASSIGNMENT SLOT ASSIGNMENT SLOT ASSIGNMENT SLOT ASSIGNMENT 1 CU1 CH1 7 CU1 CH7 13 CU2 CH5 19 CU3 CH1 2 CU1 CH2 8 CU1 CH8 14 CU2 CH6 20 CU3 CH2 3 CU1 CH3 9 CU2 CH1 15 CU2 CH7 21 CU3 CH2 4 CU1 CH4 10 CU2 CH2 16 CU2 CH8...

Страница 89: ...d but does not have the necessary time slot s assigned Table 22 Channel Configuration Options Parameter Default Value Function Channel Configuration Enabled Each channel is individually enabled or disabled This configuration is stored in both the COLU and the CO channel card If any one card COLU RTLU COCU or RTCU is removed replaced or reinserted the Channel Configuration is automatically preserve...

Страница 90: ...propriate show only a 23 inch shelf with three channel units Table 23 POTS Ground Loop Start Configuration Options Parameter Default Value Function Channel Configuration Loop Each POTS channel may be individually configurable as Loop Start or Ground Start This configuration is stored in both the COLU and the channel card If any one card COLU RTLU COCU or RTCU is removed and replaced or reinserted ...

Страница 91: ...es when ISDN channel units are installed These units provide the composite clock reference source for the ISDN channel units and are required for normal operation of the ISDN channel units Removing the FPI 729 List 1 or FAU 728 List 2 during an ISDN call terminates the call If there are no ISDN cards present in the system the display indicates that there are no ISDN cards installed and does not al...

Страница 92: ...l unit and channel to configure 3 Type the channel unit number and channel for the new ISDN channel unit to be configured All of the parameters discussed in the remainder of this section ISDN Channel Setup are stored in the COLU card NVRAM and therefore does not change when power is cycled or cards are removed and reinserted Enter 01 SEP 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 03 39 52 SYSTE...

Страница 93: ...ystem In the transparent mode ISDN eoc messages are not decoded and are passed through the system transparently The default setting is Normal C B1 B2 swap Normal With the Swap setting ISDN channel B1 and B2 at the CO ISDN U interface are routed to channels B2 and B1 at the RT ISDN U interface The D signaling channel is unaffected The default is Normal D Sealing current Off When Sealing Current is ...

Страница 94: ... menu 2 Type and press to display the Alarm On ISDN PM Threshold Cross menu 3 Type and press to enable the alarm or type and press to disable the alarm A Enter N Enter 07 APR 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 01 44 42 SYSTEM ID PG Flex 24 Channel System SYSTEM 1 ALARM ON ISDN PM THRESHOLD CROSS CURRENTLY DISABLED COT ENABLE THE ALARM ON ISDN THRESHOLD CROSSING Y N Y Enter N Enter ...

Страница 95: ...e 92 ISDN Performance Monitoring page 95 Starting at the Main Menu type and press The Status Menu is displayed A Enter 01 SEP 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 00 01 18 SYSTEM ID PairGain PG Flex System SYSTEM 1 CURRENT STATUS OK LOGGED IN COT ALARMING TERMINAL NONE CHREV SPAN 1 STATUS MENU A SYSTEM STATUS B CHANNEL STATUS C HDSL STATUS D ALARM HISTORY E ISDN PERFORMANCE MONITORING CTR...

Страница 96: ...u Type and press for System Status menu An next to the unit name indicates that the unit is currently in the alarm state A Enter 06 FEB 96 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 03 41 20 SYSTEM ID PG Flex 24 Channel System SYSTEM 2 SYSTEM STATUS LOCATION LINE UNIT CU1 CU2 CU3 CU4 CU5 CU6 COT LU1 24 CH T1 ISDN4 POTS8 POTG8 RT LU ISDN4 POTS8 POTG8 ACTIVE ALARM S NONE CTRL X Main Menu e X it COT ...

Страница 97: ...h ACTN The ISDN channel is active NACT The ISDN channel is not active TDSB The ISDN card does not have sync NSYN The ISDN channel is not synchronized with the CO switch Option A allows toggling between the CO and RT channel status B Enter 06 FEB 96 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 03 41 20 SYSTEM ID PG Flex 24 Channel System SYSTEM 2 COT CHANNEL STATUS CU1 CU2 CU3 CU4 CU5 CU6 Channel COT...

Страница 98: ...ET Crystal oscillator offset Normal is 64 to 64 24 HOUR ES Number of one second intervals which contained at least one CRC error 24 HOUR UAS Number of seconds the HDSL loop was out of sync C Enter 06 FEB 96 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 03 41 20 SYSTEM ID PG Flex 24 Channel System SYSTEM 2 HDSL STATUS ALARMS NONE COT HDSL 1 COT HDSL 2 RT HDSL 1 RT HDSL 2 mn cr mx mn cr mx mn cr mx mn ...

Страница 99: ...story for 24 hours B Shows a performance history for seven days R Resets minimum and maximum margins 24 Hour ES 24 Hour UAS and 24 Hour Performance History When the prompt displays you type Y to confirm the reset or type N to cancel the reset X Exits the current screen and returns you to the status menu S Shows doubler spans not seen on the current screen The first screen shows the span from the C...

Страница 100: ...AST CLEARED Date and time when the counters were last zeroed COT SHELF Conditions that only relate to the CO RT SHELF Conditions that only relate to the RT SPAN ALARM Conditions that only relate to spans D Enter 06 FEB 96 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 03 41 20 SYSTEM ID PG Flex 24 Channel System SYSTEM 2 SYSTEM ALARM HISTORY LAST CLEARED A COT SHELF ALARM HISTORY B RT SHELF ALARM HIST...

Страница 101: ...able seconds the HDSL2 loop was out of synchronization HDSL1 MARGIN Indicates the excess signal to noise ratio at either the COT or RT relative to a 10 7 Bit Error Rate The normal range of a typical margin is from 22 to 6 dB C Enter 01 SEP 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 00 01 56 SYSTEM ID PairGain PG Flex System SYSTEM 1 SPAN 1 ALARM HISTORY Type First Last Status Current Count HDSL...

Страница 102: ... History menu Span 2 is only available when a doubler is present in the circuit S Enter 01 SEP 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 00 01 56 SYSTEM ID PairGain PG Flex System SYSTEM 1 SPAN 2 ALARM HISTORY Type First Last Status Current Count HDSL1 UAS JUN 12 00 00 JUN 12 00 00 Enabled NONE 1 e X it S pan x ...

Страница 103: ...elected card and channel is displayed E Enter 06 FEB 96 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 03 41 20 SYSTEM ID PG Flex 24 Channel System SYSTEM 2 ISDN PERFORMANCE MONITORING MENU Press ESCAPE to return to previous menu Enter Card and Channel CARD CHANNEL 2 1 Enter 06 FEB 96 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 03 41 20 SYSTEM ID PG Flex 24 Channel System SYSTEM 2 ISDN PERFORMANCE MONI...

Страница 104: ...Performance Monitoring 96 ...

Страница 105: ... system faults The troubleshooting methods are organized into three groups troubleshooting using front panel LED indications page 98 PG Flex metallic test access page 102 subscriber drop testing page 103 troubleshooting using standard test equipment page 110 TROUBLESHOOTING ...

Страница 106: ...ote terminal line unit This is usually an indication that there is a problem with the HDSL circuit between the COT and RT assuming the FAULT LED is off 1 Verify the HDSL circuits are terminated properly and with the correct orientation 2 Measure the loop resistance of each HDSL circuit shorting the pair at the far end The loop resistance must be less than that shown in Table 9 on page 25 3 Ensure ...

Страница 107: ... of a shelf Use a terminal to access the fault information MAJOR Major alarm toggles on and off The COT line unit fault LED toggles on and off The HDSL sync LEDs indicate sync Verify that the composite clock terminations are properly terminated 135 Ω across CC1 and CC2 Tip and Ring leads This can also be a minor alarm MINOR Minor alarm LED is on Verify the status of fault LEDs on the line units an...

Страница 108: ...t loop length too long CO switch 1 Lift the subscriber pair at the network interface If ringing is present refer the problem to the customer per local practice 2 If ringing is not present check for ringing at the RT If ringing is present check the pair between the RT and the network interface If no ringing is present replace the RT channel unit If ringing is still not present check a circuit on an...

Страница 109: ... the RT check the pair between the RT and the network interface If the level is too low at the RT replace the RT channel unit 3 If the level is still too low reinsert the original RT channel unit 4 Check the level at the COT coming from the CO switch If it is correct replace the COT channel unit If it is not correct refer the problem to the CO regarding the switch 5 If the level is still not corre...

Страница 110: ...ivation is activated by receipt of 116VDC to the Tip lead of the Central Office channel unit for the Channel Under Test The POTS connection from the CO switch to the Channel Under Test is dropped and the connection is routed to the Metallic Bypass line The routing is completed at the Remote Terminal end where the Metallic Bypass line is connected to the subscriber POTS circuit In effect PG Flex is...

Страница 111: ... and breaking The access functions have been designed primarily with POTS circuits in mind although it works with other 2 wire services such as ISDN Bridging provides a low impedance connection in parallel across the circuit Breaking separates the subscriber connection at the point of interest providing exclusive access to the line for the attached test equipment The metallic access points are rea...

Страница 112: ...II terminal and the COT line unit s maintenance port the technician can access a specific subscriber drop Instead of connecting the metallic bypass pair back to the local test system through the CO switch the metallic connection appears on the PGTC or Alarm Unit test jack As shown in Figure 33 this method of metallic access does not require a local test system and provides the technician with a me...

Страница 113: ...there is an ISDN loop back test option available From the Maintenance Menu type or and press The selected menu Metallic Access or ISDN Loop Back is displayed 29 JUN 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 00 17 02 SYSTEM ID PG Flex 24 Channel System SYSTEM 1 CURRENT STATUS OK LOGGED IN COT ALARMING TERMINAL NONE CHREV SPAN 1 MAINTENANCE MENU A METALLIC ACCESS B ISDN LOOP BACK CTRL X Main Men...

Страница 114: ...y tostimulate and measure the subscriber circuit connection between the RT channel unit tip ring pair and the subscriber terminal device E RT Looking In Provides the ability to connect a terminal device to the specified channel through the Bypass pair This provides the ability to verify the channel connection through PG Flex but excluding the subscriber loop and subscriber s terminal device F RT B...

Страница 115: ...a and then enter the channel number The Metallic Access Menu displays 3 Use a VOM Butt in or other test equipment to test the subscriber circuit A G Enter 29 JUN 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 00 18 50 SYSTEM ID PG Flex 24 Channel System SYSTEM 1 CURRENT STATUS OK LOGGED IN COT ALARMING TERMINAL NONE CHREV SPAN 1 METALLIC ACCESS Press ESCAPE to return to previous menu Enter Card and...

Страница 116: ...the circuit to service Y 29 JUN 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 00 19 44 SYSTEM ID PG Flex 24 Channel System SYSTEM 1 CURRENT STATUS TEST LOGGED IN COT ALARMING TERMINAL NONE CHREV SPAN 1 METALLIC ACCESS COT BRIDGING ACCESS IN PROGRESS ON CU2 CH1 Press ESCAPE to return to previous menu Do you wish to stop the channel access bypass test Y N y ...

Страница 117: ...the ISDN circuit To release Loopback on an ISDN line 1 Select Change Loopback Mode from the ISDN Loopback Menu 2 Select the card and channel of the ISDN card to be released from the loopback test 3 Select Set Normal from the loopback mode menu C 29 JUN 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 00 20 36 SYSTEM ID PG Flex 24 Channel System SYSTEM 1 ISDN LOOPBACK MENU COT LOOPBACK MAP CARD 1 LOOP...

Страница 118: ...rom T1 to frame ground and from R1 to frame ground This should be a positive voltage up to 130 Vdc Measure the voltage from T2 to frame ground and from R2 to frame ground This should be a negative voltage down to 130 Vdc No dial tone Move or swap cards to isolate the defective unit No dial tone for all systems Check for MAJOR alarm this terminates dial tone to the RT Check the alarm history If sti...

Страница 119: ...eases as cable size increases the larger the gauge i e 19 AWG vs 26 AWG the greater the distance between the COT and the RT Table 35 identifies these distances at a cable temperature of 68 F Table 35 12 24 Channel HDSL Transmission Distance Gauge Loop Length DC Resistance 19 AWG 0 9 mm 22 8 kft 7 0 km 367 Ω 22 AWG 0 6 mm 16 1 kft 4 9 km 521 Ω 24 AWG 0 5 mm 12 3 kft 3 7 km 638 Ω 26 AWG 0 4 mm 9 0 k...

Страница 120: ...Troubleshooting 112 ...

Страница 121: ...cal assistance is handled by an on duty Customer Service Engineer through a callback process This process normally results in a callback within 30 minutes of initiating the request In addition PairGain maintains a computer bulletin board system for obtaining current information on PairGain products product troubleshooting tips and aids accessing helpful utilities and for posting requests or questi...

Страница 122: ...l Electrical Code Warranty PairGain Technologies warrants this product to be free of defects and to be fully functional for a period of 5 years from the date of original shipment given proper customer installation and regular maintenance PairGain repairs or replaces any unit without cost during this period if the unit is found to be defective for any reason other than abuse or improper use or inst...

Страница 123: ...The screen menus and definitions include the following Logon screens page A 2 FPI 729 Main Menu and configuration screens page A 5 Main Menu screens page A 7 Status Menu screens page A 10 Setup Menu screens page A 22 Maintenance Menu screens page A 31 Inventory screens page A 35 Appendix A SCREEN MENUS AND DEFINITIONS ...

Страница 124: ... PGTC Interface Figure A 2 shows the logon sequence for accessing a PG Flex system through a line unit Refer to Main Menu Screen on page 7 Figure A 2 Logon Sequence Through a Line Unit The following pages contain samples of logon screens for the PG Flex system Status Logon FPI Main Connect to System Setup Maintenance Inventory Connect to COT COT 1 through 4 Configuration Main Status Logon Main Men...

Страница 125: ...n The connection screen appears after connecting an ASCII terminal to the FPI unit FPI Logon Screen The FPI logon screen appears after pressing the several times starting the autobaud feature FPI Ready Spacebar Access Key 152920 FPI Enter Password ...

Страница 126: ...tem time the FPI Main Menu will display see FPI 729 Main Menu and Configuration Screens on page 5 If you logged on through a line unit after entering the system time the Main Menu will display see Main Menu Screen on page 7 01 SEP 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 00 01 08 SYSTEM ID PG Flex 24 Channel System SYSTEM 1 SYSTEM TIME System Time has NOT been initialized COT ENTER NEW SYSTEM...

Страница 127: ...ptions PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL SYSTEM ID PG Flex 24 Channel System CURRENT ALARMS NONE MAIN MENU 1 Connect to COT 1 Active 2 Connect to COT 2 Active 3 Connect to COT 3 Inactive 4 Connect to COT 4 Inactive 5 Configuration Q Quit FPI ENTER COMMAND 5 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL SYSTEM ID PG Flex 24 Channel System CURRENT ALARMS NONE FPI CONFIGURATION Type PGTC Interf...

Страница 128: ...card cannot detect a valid composite clock signal from the primary or secondary source A composite clock is required for ISDN and DDS services OFF No alarms are generated when a composite clock signal is not present MINOR A minor alarm is generated when a valid composite clock is not present MAJOR A major alarm is generated when a valid composite clock is not present This parameter is stored in th...

Страница 129: ...ure A 3 for a Main Menu block diagram Table A 2 on page 9 describes the options associated with these four Main Menu options A through D 12 JUN 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 05 09 16 SYSTEM ID PG Flex 24 Channel System SYSTEM 1 CURRENT STATUS OK LOGGED IN COT ALARMING TERMINAL NONE CHREV SPAN 1 MAIN MENU A STATUS B SETUP C MAINTENANCE D INVENTORY Q uit FPI ENTER COMMAND ...

Страница 130: ...annel Status HDSL Status Alarm History ISDN Performance Monitoring Login Main Menu Connect to System System Setup Setup Time Slots Assignment Channel Configuration POTS Loop Ground ISDN Channel Setup Start Setup Metallic Access Maintenance ISDN Loop Back Inventory System Time 1st time login only ...

Страница 131: ...tory Alarm History to show the status of system alarm conditions Examples of alarm conditions are COT Shelf Alarm History RT Shelf Alarm History Span Alarm History ISDN Performance Monitoring to show the following conditions PM Error Count PM Threshold Alert Info B Setup Select the Setup option from the Main Menu to view the current setup and to set or change the following configurable items Syste...

Страница 132: ...m status starting from the Status Menu 29 JUN 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 00 04 06 SYSTEM ID PG Flex 24 Channel System SYSTEM 1 CURRENT STATUS OK LOGGED IN COT ALARMING TERMINAL NONE CHREV SPAN 1 STATUS MENU A SYSTEM STATUS B CHANNEL STATUS C HDSL STATUS D ALARM HISTORY E ISDN PERFORMANCE MONITORING CTRL X Main Menu e X it COT ENTER COMMAND a 29 JUN 97 PAIRGAIN TECHNOLOGIES INC P...

Страница 133: ... Displays the following channel status conditions IDLE RING BUSY OPEN ACTN NACT TDSB NSYN Displays the following HDSL status conditions ALARMS MARGIN dB PULSE ATTENUATION dB PPM OFFSET ppm 24 HOUR ES 24 HOUR UAS LAST CLEARED 7 Day Performance History COT Shelf Alarm History RT Shelf Alarm History ISDN Performance Monitoring PM Error Count PM Threshold Alert Info Alarm History Span Alarm History ...

Страница 134: ...M 1 COT CHANNEL STATUS CU1 CU2 CU3 Channel COT ISDN4 POTS8 POTS8 1 NSYN OPEN OPEN 2 NSYN OPEN OPEN 3 TDSB OPEN OPEN 4 TDSB OPEN OPEN 5 OPEN OPEN 6 OPEN OPEN 7 OPEN OPEN 8 OPEN OPEN A TOGGLE BETWEEN COT AND RT CHANNEL STATUS CTRL X Main Menu e X it COT ENTER COMMAND a Please wait a moment A Enter 29 JUN 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 00 04 38 SYSTEM ID PG Flex 24 Channel System SYSTE...

Страница 135: ...0 PULSE ATTN db 19 20 19 20 PPM OFFSET ppm 0 0 13 13 24 HOUR ES 0 1 2 1 24 HOUR UAS 25 24 1 0 LAST CLEARED NONE A 24 HOUR PERFORMANCE HISTORY B 7 DAY PERFORMANCE HISTORY CTRL X Main Menu R eset e X it 29 JUN 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 00 05 04 SYSTEM ID PG Flex 24 Channel System SYSTEM 1 24 HOUR HDSL PERFORMANCE HISTORY TIME COT HDSL 1 RT ES UAS COT HDSL 2 RT 20 15 0 0 0 0 0 0 0...

Страница 136: ...1 7 DAY HDSL PERFORMANCE HISTORY ERRORED SECONDS UNAVAILABLE SECONDS HDSL 1 HDSL 2 DATE COT RT COT RT JUN 22 0 0 0 0 0 0 0 0 JUN 23 0 0 0 0 0 0 0 0 JUN 24 0 0 0 0 0 0 0 0 JUN 25 0 0 0 0 0 0 0 0 JUN 26 0 0 0 0 0 0 0 0 JUN 27 0 0 0 0 0 0 0 0 JUN 28 0 0 0 0 0 0 0 0 CTRL X Main Menu e X it COT ENTER COMMAND 29 JUN 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 00 05 52 SYSTEM ID PG Flex 24 Channel Syst...

Страница 137: ...00 00 JUN 29 00 00 Enabled NONE 1 HDSL2 UAS JUN 29 00 00 JUN 29 00 00 Enabled NONE 1 NO RT POWER JUN 29 00 00 JUN 29 00 00 Enabled NONE 1 HDSL OOS JUN 29 00 00 JUN 29 00 00 Enabled NONE 1 ISDN DSL FRM JUN 29 00 00 JUN 29 00 00 Enabled INFO 1 ISDN D FRM JUN 29 00 00 JUN 29 00 00 Enabled NONE 1 INSUFFICIENT TS JUN 29 00 00 JUN 29 00 00 Disabled MINOR 1 e X it 29 JUN 97 PAIRGAIN TECHNOLOGIES INC PG F...

Страница 138: ...e span alarm history will reset when the PG Flex system is powered down 29 JUN 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 00 06 30 SYSTEM ID PG Flex 24 Channel System SYSTEM 1 SPAN 1 ALARM HISTORY Type First Last Status Current Count HDSL1 UAS JUN 29 00 00 JUN 29 00 00 Enabled NONE 1 HDSL2 UAS JUN 29 00 00 JUN 29 00 00 Enabled NONE 1 e X it ...

Страница 139: ...isplayed after entering the card and channel numbers 29 JUN 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 00 07 12 SYSTEM ID PG Flex 24 Channel System SYSTEM 1 ISDN PERFORMANCE MONITORING MENU Press ESCAPE to return to previous menu Enter Card and Channel CARD CHANNEL 1 1 29 JUN 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 00 07 24 SYSTEM ID PG Flex 24 Channel System SYSTEM 1 ISDN PERFORMANCE MON...

Страница 140: ...HOLD ALERT INFO CTRL X Main Menu e X it Enter Card and Channel CARD CHANNEL 1 1 29 JUN 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 00 08 20 SYSTEM ID PG Flex 24 Channel System SYSTEM 1 PM ERROR COUNT INTERIM PATH ENABLED CARD 1 CHANNEL 1 COT CUSTOMER NETWORK Hourly ES Hourly SES Hourly BE Daily ES Daily SES PREVIOUS 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 CURRENT 00000 00470 ...

Страница 141: ...00 00471 00000 38969 00000 00473 00000 00474 RT CUSTOMER NETWORK Hourly ES Hourly SES Hourly BE Daily ES Daily SES PREVIOUS 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 CURRENT 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 LAST CLEARED NONE A SELECT NEW CARD AND CHANNEL B 8 HOUR PM ES COUNT HISTORY CTRL X Main Menu R eset e X it 29 JUN 97 PAIRGAIN TECHNOLOGIES INC PG F...

Страница 142: ...ly ES Daily SES Threshold Count 00000 00000 00000 00000 Threshold Exceeded yes yes yes yes yes yes yes yes Threshold Cross Alarm ena ena ena ena ena ena ena ena A SELECT NEW CARD AND CHANNEL B CHANGE PM THRESHOLD COUNT C ENABLE DISABLE THRESHOLD CROSSING ALARM CTRL X Main Menu e X it COT ENTER COMMAND c 29 JUN 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 00 11 16 SYSTEM ID PG Flex 24 Channel Syst...

Страница 143: ... A COT Hourly ES E RT Hourly ES B COT Hourly SES F RT Hourly SES C COT Daily ES G RT Daily ES D COT Daily SES H RT Daily SES CTRL X Main Menu e X it COT ENTER COMMAND a 29 JUN 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 00 11 36 SYSTEM ID PG Flex 24 Channel System SYSTEM 1 PM ALERT INFO INTERIM PATH ENABLED CARD 1 CHANNEL 1 A COT Hourly ES Customer I RT Hourly ES Customer B COT Hourly ES Network...

Страница 144: ...YSTEM SETUP B TIME SLOTS ASSIGNMENT C CHANNEL CONFIGURATION D POTS LOOP GROUND START SETUP E ISDN CHANNEL SETUP CTRL X Main Menu e X it COT ENTER COMMAND a 01 SEP 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 03 39 52 SYSTEM ID PG Flex 24 Channel System SYSTEM 1 SYSTEM SETTINGS A SYSTEM DATE 01 SEP 97 B SYSTEM TIME 03 39 52 C SYSTEM ID PG Flex 24 Channel System D SET PASSWORD E AUTO LOGOUT TIME mi...

Страница 145: ...requency Hz HDSL ES Alarm Threshold HDSl Margin Threshold Alarm on HDSL Threshold Local Loop Length Alarm on Configuration Alarm on Insufficient Timeslot Alarm on ISDN PM Threshold ISDN Channel Setup Identifies the timeslot usage Time Slot Channel Assignment Displays enable disable state of each channel Displays the options to change channels units from Loop Start to Ground Start Displays the setu...

Страница 146: ... to indicate the physical location of the PG Flex system CO or RT terminal Each PG Flex system should have a unique System ID The default for System ID is blank all spaces This can be left blank or set to any desired name of 24 or fewer characters including spaces This name can be any mixture of alphanumeric characters including upper case lower case numerals punctuation etc If System ID is set to...

Страница 147: ...es can be set to one of the following parameters 20 The ring generator is set to 20 Hz 25 The ring generator is set to 25 Hz 30 The ring generator is set to 30 Hz H HDSL ES Alarm Threshold DISABLED Sets the number of Error Seconds required before a minor alarm is generated dependent on the setting of the Alarm on HDSL Threshold parameter The count of Error Seconds is reset to zero when the reset f...

Страница 148: ... Alarm on Configuration DISABLED Each channel card in a PG Flex system must have a corresponding channel card type at the opposite node A mismatch condition results when a card does not have the correct corresponding card at the other end due to channel unit removal type mixing or failure Note if a mismatch condition exists between the CO and RT replace the corresponding channel with a matching ch...

Страница 149: ...the ISDN PM thresholds are exceeded Table A 3 System Settings Menu Options Continued Type Letter Parameter Default Value Function 06 FEB 96 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 03 41 10 SYSTEM ID PairGain PG Flex System SYSTEM 2 TIME SLOTS ASSIGNMENT TIME CHANNEL TIME CHANNEL TIME CHANNEL TIME CHANNEL SLOT ASSIGNMENT SLOT ASSIGNMENT SLOT ASSIGNMENT SLOT ASSIGNMENT 1 CU1 CH1 7 CU1 CH7 13 CU2 ...

Страница 150: ...channel card If any one card COLU RTLU COCU or RTCU is removed and replaced or reinserted the Channel Configuration is automatically preserved Can be set to the following parameters DISABLED The selected channel is disabled ENABLED The selected channel is enabled 06 FEB 96 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 03 41 20 SYSTEM ID PairGain PG Flex System SYSTEM 2 CHANNEL CONFIGURATION CU1 CU2 C...

Страница 151: ...he COLU and the channel card If any one card COLU RTLU COCU or RTCU is removed and replaced or reinserted the Loop Ground Start Configuration is automatically preserved Can be set to the following parameters LOOP The selected channel is set for Loop Start GND The selected channel is set for Ground Start 01 SEP 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 03 41 20 SYSTEM ID PairGain PG Flex System...

Страница 152: ...The default setting is Normal C B1 B2 swap Normal With the Swap setting ISDN channel B1 and B2 at the CO ISDN U interface are routed to channels B2 and B1 at the RT ISDN U interface The D signaling channel is unaffected The default is Normal D Sealing current Off When Sealing Current is set to On there is a constant current of approximately 5 ma flowing in the ISDN subscriber loop at all times The...

Страница 153: ... INC PG FLEX TERMINAL 00 17 02 SYSTEM ID PG Flex 24 Channel System SYSTEM 1 CURRENT STATUS OK LOGGED IN COT ALARMING TERMINAL NONE CHREV SPAN 1 MAINTENANCE MENU A METALLIC ACCESS B ISDN LOOP BACK CTRL X Main Menu e X it COT ENTER COMMAND a Metallic Access Maintenance ISDN Loop Back Allows you to select a channel for one of the following test COT Bridging COT Looking In COT Looking Out RT Looking O...

Страница 154: ...hannel System SYSTEM 1 CURRENT STATUS OK LOGGED IN COT ALARMING TERMINAL NONE CHREV SPAN 1 METALLIC ACCESS MENU A COT BRIDGING B COT LOOKING IN C COT LOOKING OUT D RT LOOKING OUT E RT LOOKING IN F RT BRIDGING G SUBSCRIBER BYPASS R emove access CTRL X Main Menu e X it COT ENTER COMMAND a 29 JUN 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 00 18 50 SYSTEM ID PG Flex 24 Channel System SYSTEM 1 CURRE...

Страница 155: ...AL NONE CHREV SPAN 1 METALLIC ACCESS MENU A COT BRIDGING ENABLED ON CU2 CH1 B COT LOOKING IN C COT LOOKING OUT D RT LOOKING OUT E RT LOOKING IN F RT BRIDGING G SUBSCRIBER BYPASS R emove access CTRL X Main Menu e X it COT ENTER COMMAND R Enter 29 JUN 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 00 19 44 SYSTEM ID PG Flex 24 Channel System SYSTEM 1 CURRENT STATUS TEST LOGGED IN COT ALARMING TERMINA...

Страница 156: ...al normal 2B D DSL normal normal normal normal B1 DC normal normal normal normal B2 DC normal normal normal normal 2B D DC normal normal normal normal P revious Card or N ext Card S witch between COT or RT Loopback C hange Loopback Mode CTRL X Main Menu e X it COT ENTER COMMAND s 29 JUN 97 PAIRGAIN TECHNOLOGIES INC PG FLEX TERMINAL 00 21 02 SYSTEM ID PG Flex 24 Channel System SYSTEM 1 ISDN LOOPBAC...

Страница 157: ... LIST ISSUE TYPE S W P1 TAG CLEI CODE COT LU1 FLL 712 24 CH T1 3 3 COT CU1 FLC 706 1 1 ISDN4 1 3 0123456789 ABCDEFGHI COT CU2 FLC 703 3 1 POTS8 1 3 3486001292 COT CU3 FLC 703 3 1 POTS8 1 3 abcdefghij abcdefghij RT LU 3 5 RT CU1 FRC 756 1 1 ISDN4 1 3 0123456789 ABCDEFGHI RT CU2 POTS8 1 4 RT CU3 FRC 753 2 1 POTS8 1 4 0307000570 VARHCGGCAA RT CU4 POTS8 1 4 CTRL X Main Menu e X it COT ENTER COMMAND 29...

Страница 158: ...Screen Menus and Definitions A 36 ...

Страница 159: ...S Building Integrated Timing Supply CCITT International Telegraph and Telephone Consultative Committee CO Central Office CLEI Common Language Equipment Identifier COT Central Office Terminal CPE Customer Premises Equipment crc Cyclic Redundancy Check DCS Digital Cross connect System DDS Digital Data Service DLC Digital Loop Carrier System DS0 Digital Signal Level Zero 64 kb s DS1 Digital Signal Le...

Страница 160: ...econd kft Kilo foot LOS Loss of Signal LOSW Loss of Synchronization Word LSB Least Significant Bit LU Line Unit MBP Metallic Bypass Pair MLT Mechanized Loop Test System MSB Most Significant Bit NI Network Interface OS Operations System PCB Printed Circuit Board PCM Pulse Code Modulation PGTC Pair Gain Test Controller PM Performance Monitoring in service based on CRC and FEBE POTS Plain Old Telepho...

Страница 161: ...s 196 kHz loss The pulse attenuation is a more direct indication of the loop attenuation to the 2B1Q signal than the 196 kHz loss The normal range of pulse attenuation is from 1 to 32 dB PPM Indicates the relative offset of the crystal oscillator in the RT Line Unit from the COT Line Unit s crystal oscillator Any value between 64 and 64 is adequate Values out side this range indicate out of tolera...

Страница 162: ...Acronyms and Glossary Glossary 4 ...

Страница 163: ... channel conditions 88 90 92 95 conditions 89 channel unit 6 ISDN 7 POTS 6 channel unit signatures 11 channel units COT installation 52 chassis ground wiring 29 CO battery connecting 41 single feed 41 split feed 41 compatibility ISDN LS GS w PGTC 24 loop start POTS only service 21 loop start POTS only w PGTC 23 LS GS POTS 23 LS GS POTS w PGTC 24 composite clock connecting to COT 46 configuration 2...

Страница 164: ...onnecting HDSL lines 42 COT shelf 39 line units 51 PGTC interface 50 subscriber lines 47 wiring power 40 installing remote terminal equipment 26 channel unit 35 connecting bypass pair 31 connecting chassis ground wiring 29 connecting HDSL lines 30 connecting subscriber lines 32 line unit 34 protector plugs 33 remote terminal enclosure 27 ISDN channel setup 83 configuration options 85 ISDN loopback...

Страница 165: ...RT channel unit 10 RT enclosure 8 RT line unit 9 repair center 114 RT channel unit installing 35 ISDN 10 POTS 10 RT line unit installing 34 S screen menus A 1 FPI main menu A 5 inventory menu A 35 log on screen A 3 main menu A 7 maintenance menu A 31 setup menu A 22 status menu A 10 system time A 4 service options 20 setup menus channel configuration A 28 ISDN channel setup A 30 POTS ground loop s...

Страница 166: ...nal management 55 test access 102 automatic line 102 manual subscriber line 102 test desk activation 102 time slots viewing 80 transmission distance HDSL 111 troubleshooting 97 channel unit 100 FPI 729 or FAU 728 99 ISDN loopback 109 ISDN loopback test 109 line unit 98 maintenance menu 105 metallic access 106 typical 2 U using this manual iv W warranty 114 ...

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