Metrodata ATM CBR DSU User Manual Download Page 3 | Manualshive

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Copyright © 2006 by Metrodata Ltd

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Metrodata Ltd,

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Summary of Contents for ATM CBR DSU

Page 1: ...age Eversley Way Egham Surrey TW20 8RY United Kingdom tel 44 0 1784 744700 fax 44 0 1784 744730 email support metrodata co uk Part No 76 02 031E website www metrodata co uk Metrodata ATM CBR Circuit E...

Page 2: ......

Page 3: ...merchantability or fitness for any particular purpose Further Metrodata Ltd reserves the right to revise this publication and to make changes from time to time in the content hereof without obligatio...

Page 4: ......

Page 5: ...Connecting to a PC COM port 16 3 8 ATM UNI Port Fibre 17 3 9 ATM UNI Port BNC 17 3 10 CBR LINE Network Port BNC 18 4 INSTALLING SETTING UP 19 4 1 DSU Connections 19 4 2 Power up sequence 20 4 3 Setti...

Page 6: ...ry style 55 6 4 5 Physical layer summary display COUNTS style 56 6 4 6 Physical layer summary display G 821 style 57 6 4 7 Physical layer summary display Percent G 821 style 58 6 5 PLCP Layer Errors A...

Page 7: ...er Alarms 84 11 6 E3 Alarm Response 85 11 7 E3 Error Types 85 12 DS3 CBR PORT CONFIGURATION 87 12 1 DS3 Physical Interface 87 12 2 DS3 Physical Layer Framing 87 12 3 DS3 WAN Set up 87 12 3 1 Framing 8...

Page 8: ...terface 103 15 2 TAXI Framing 103 15 3 TAXI PLCP Layer 103 15 4 TAXI ATM Layer 103 15 5 TAXI WAN Set Up 103 15 6 TAXI ATM Set Up 103 15 6 1 Forward Idle Cells 103 15 6 2 HEC Coset 103 15 6 3 Idle Cell...

Page 9: ...17 SPECIFICATIONS 111 17 1 CBR Ports 111 17 2 ATM UNI Ports 113 17 3 General Specifications 116 17 4 ATM CBR DSU default settings 116 18 GLOSSARY 117...

Page 10: ......

Page 11: ...e CBR stream when the ATM overhead is taken into account This means that the ATM side of the DSU must present a higher bandwidth than the CBR side Figure 1 1 Bandwidth for CBR to ATM conversion The ta...

Page 12: ...ined on a rolling basis Diagnostics are provided in the form of various loop backs which can be used to localise a fault condition on the line ATM CBR DSUs can be managed by connecting a video termina...

Page 13: ...The DSUs are installed in circuit as shown in the Figure below Figure 1 2 ATM CE Deployment WAN PABX VIDEO CODEC PABX VIDEO CODEC ATM CBR DSU E1 CBR LINK E3 ATM LINK ATM NETWORK DS3 ATM LINK E1 CBR L...

Page 14: ...nfiguring the ATM CBR DSU describes the menu driven user interface The end of this Section describes a typical set up and commissioning procedure and acts as a checklist for both first time and experi...

Page 15: ...ates that the option leads to another menu from which further options may be chosen Screen displays which contain variable information such as the current date or time show the variable in italics sur...

Page 16: ...INTRODUCTION 76 02 031E 6...

Page 17: ...able screen must be terminated to the screened connector shell and not connected to any pins of the connector Failure to use the correct connector may compromise EMC compliance 2 3 EN55022 Declaration...

Page 18: ...SU must be connected to safety earth for correct operation Safety notes Excessive voltages are present inside the unit There are no user serviceable parts inside the unit and the cover should not be r...

Page 19: ...DSU family employ laser technology Care must be taken not to expose the eyes to laser beams or radiation since tissue damage to the eyes can result DSUs that use laser technology are the SDH Sonet mo...

Page 20: ...STATUTORY INFORMATION 76 02 031E 10...

Page 21: ...CBR traffic across the network as an ATM stream or to receive incoming ATM traffic One DSU front panel light is labelled ATM UNI FAULT This single light serves to indicate both MAJOR and MINOR ATM ala...

Page 22: ...tage and current ranges are minus 36 to 72 volts DC 200 100mA A Buccaneer type socket is fitted to the rear panel and a plug is provided with the unit for the customer s own wiring The connections are...

Page 23: ...is either a 6 pin mini DIN connector or a 9 pin D type connector allowing you to connect the major and minor alarm relay contacts within the DSU to a remote indicator such as a bell or a lamp The maxi...

Page 24: ...VIA MODEM is set to ON version 4 xx then RTS pin 4 on the DSU terminal port needs to be correctly driven otherwise the user will be permanently logged out of the DSU To drive the RTS correctly a fully...

Page 25: ...Minimum RS232 connection A cable to connect a local terminal to this port without a modem may have the minimum RS232 connection when this is suitable for the terminal being used as shown below Figure...

Page 26: ...PC The connections are given in the figure below Figure 3 13 Terminal port converter cable 25 way to 9 way Notes a To inhibit the modem control function for reasons explained earlier in this section...

Page 27: ...the panel The ATM UNI connectors are the left hand pair Connections are as follows Figure 3 14 UNI BNC Connections Note Cable lengths should be restricted to those defined in the table below Figure 3...

Page 28: ...low Figure 3 17 Network cable lengths Note The total maximum attenuation of each of the cables attached to the Network Port must not exceed 6dB when measured at 1 024 MHz E1 4 224 MHz E2 17 184 MHz E3...

Page 29: ...your DSU depending upon the model purchased Step 3 CBR Line Port Connect the CBR LINE port of the DSU to the WAN port of the customer premises CBR equipment Before connecting the CBR LINE port make s...

Page 30: ...mpt e g CBR5900 When you have entered this once you will be able to change the password if you wish as described in Section 5 2 4 When you enter the appropriate password you will be presented with the...

Page 31: ...w menu will be displayed Pressing a letter corresponding to a menu option will lead to additional prompts at the bottom of the screen Figure 4 4 Prompt screen The current value of that option will the...

Page 32: ...orresponding to a menu option the value opposite that option will be highlighted You will also see the prompts at the bottom of the screen similar to the TTY display Figure 4 6 Prompt screen Pressing...

Page 33: ...TTY output screens do not have graphic capability and are therefore not so easy to read when setting up the system Note If you are using Windows Hyperterm as your terminal emulator click on View Font...

Page 34: ...INSTALLING SETTING UP 76 02 031E 24...

Page 35: ...ng AIS Detection Framing Line coding Timing AIS Forwarding RAI Forwarding Physical interface Type of cable Distance option VPI VCI V 24 set up Special Testing Management Terminal type Baud rate Parity...

Page 36: ...mary style Physical layer stats Error type Performance data ATM stats AAL1 stats Clear all data PLCP layer stats Special ATM masks Idle cell masks GFC VPI VCI PT CLP Good cell masks GFC VPI VCI PT CLP...

Page 37: ...R DSU The screen examples shown in this section are all for the CBR5900 DSU which has a SDH Sonet ATM UNI port and an E3 CBR LINE port Figure 5 3 Main set up menu MAIN SET UP alarm eXtension General s...

Page 38: ...evice may be muted by selecting CLEAR ALARM OUTPUTS When this option is selected the alarm extension status prior to the clear command is shown below the menu Figure 5 5 Alarm status screen Note If th...

Page 39: ...led to a different level with choices MAJOR MINOR or NONE Figure 5 6 Port alarm examples The default settings for alarms are tabulated below for all ATM CBR DSU interfaces Figure 5 7 Default alarm set...

Page 40: ...by the user to MAJOR MINOR or NONE This affects which alarm extension relay is affected by an alarm but it does not affect the behaviour of the front panel indicator lights which remain at default se...

Page 41: ...e entered as15 08 2000 Figure 5 11 Date prompt The corresponding day of the week is also displayed when you press enter For the ATM CBR DSU the year is always entered as an explicit 4 digit number e g...

Page 42: ...both when you next log on Figure 5 12 Password prompt For security the characters you type are displayed on the screen as asterisks You will also be asked to re enter the password as a verification ch...

Page 43: ...ring unwanted messages A typical config file is shown below Figure 5 14 Metrodata DSU Configuration dump file Metrodata CBR5300 local connection to nodename Start capture then press a key After transf...

Page 44: ...ment terminal connected to the DSUs terminal port When INPUT CONFIG is selected from the menu screen the following message appears Figure 5 15 Input config message screen The Hyperterm path TRANSFER S...

Page 45: ...th fibre and copper media options The DSU set up screens display only the appropriate set up options for the interface detected in the DSU Sections 9 to 16 of this manual give set up details and speci...

Page 46: ...CI values The default values are 0 zero Figure 5 19 ATM set up screens To set up the ATM UNI port the user must complete the screen menu options to specify the ATM set up required as summarised in the...

Page 47: ...DLE CELL PAYLOAD This option allows the User to specify a bit pattern for use in the payload of idle ATM cells instead of all zeros This provides some transmission traffic in situations where this is...

Page 48: ...a Modem Modem support This option specifies whether a modem is to be used or not If the state of this option is set to YES with version 4 xx firmware the option is activated immediately without the ne...

Page 49: ...5 7 Load new config Except for the terminal type the changes you make on the V 24 Set up screen do not take effect until you register the changes in the DSU To do this select LOAD NEW CONFIG after you...

Page 50: ...t This option permits a reset to the internal ATM FIFO cell buffers By resetting the buffers it is possible to clear out and restart the data path This option should not normally be used but is availa...

Page 51: ...The nodename will be erased but the real time clock will not be affected For security you will be asked to confirm this request Pressing Y will perform the cold start pressing any other key will cance...

Page 52: ...If any event log contains the message SPURIOUS RESET or ILLEGAL INTERRUPT please register this occurrence with your Supplier or Distributor of the product The logs are divided into three separate logs...

Page 53: ...Section 6 The PERFORMANCE DATA menus are below Figure 5 29 Performance data menus and will be one of two types depending upon whether the interface has a PLCP layer or not Alarm Event Log 17 2 2002 08...

Page 54: ...meters first so that they correspond to the DSUs default settings as given in Section 4 5 b You may then change the DSUs BAUD RATE PARITY DATA BITS and STOP BITS from the default setting if you wish a...

Page 55: ...hat these parameters are compatible with the configuration of the network attached to the ATM UNI interface Step 7 Bandwidth management The DSU contains a 128 cell bi directional FIFO This acts as a s...

Page 56: ...CONFIGURING THE ATM CBR DSU 76 02 031E 46...

Page 57: ...xtensive performance analysis functions This enables long term quality of service information at layers 0 1 and 2 for to be derived as follows Figure 6 1 ATM CBR DSU Interfaces and layers 6 2 Physical...

Page 58: ...o front panel fault lights serve the LINE port of the DSU These are labelled LINE MAJOR and LINE MINOR e When testing the Line status takes priority over the ATM status if tests are being run on both...

Page 59: ...ror Definitions BIP Parity errors BIP 8 SDH Sonet further defines these as B1 BIP B2 BIP and B3 BIP3 errors FEBE Far End Block Errors SDH Sonet further defines FEBE s as Path FEBE or Line FEBE Code Ph...

Page 60: ...mmary has been selected as opposed to a Report from the DISPLAY MODE menu item This menu option is therefore described in section 6 4 3 6 3 3 Clear all data CLEAR ALL DATA clears the complete performa...

Page 61: ...nterface being reported They are used for routine daily monitoring of the DSU and the Network Summaries are more flexible and both the interface and type of error being monitored are user selected tog...

Page 62: ...nt Valid EFS ES BES SES UAS DM Valid LOS LOF AIS RAI SQ OSP 14 09 23 0 900 0 0 0 0 0 0 900 0 0 0 0 0 0 14 24 23 0 900 0 0 0 0 0 0 900 0 0 0 0 0 0 14 39 23 0 900 0 0 0 0 0 0 900 0 0 0 0 0 0 14 54 23 0...

Page 63: ...creen Metrodata CBR5900 Local connection to nodename E3 Interface 1 of 6 LCV Errors Alarmed seconds Period Starting Count Valid EFS ES BES SES UAS DM Valid LOS LOF AIS RAI SQ OSP 14 09 23 0 900 0 0 0...

Page 64: ...stantly refresh the display This applies to each of the display styles Static Updated and 15 minute displays The Current 15 mins column gives the error counts for the current partial 15 minute period...

Page 65: ...e Physical layer The PLCP and ATM layer statistics are given in separate later subsections COUNTS Errors and alarms accumulate and are quoted as an absolute count G 821 Errors and alarms are expressed...

Page 66: ...5900 Local connection to nodename 13 32 54 Mon 11 3 2002 PERFORMANCE SUMMARY SDH Sonet Current Alarms None Diag None Temporary Current Previous Last Counts 15 mins 15 mins 24 hours Alarm counts Total...

Page 67: ...nnection to nodename 13 32 54 Mon 11 3 2002 PERFORMANCE SUMMARY SDH Sonet Current Alarms None Diag None Temporary Current Previous Last Counts 15 mins 15 mins 24 hours Alarm counts Total Secs 856 510...

Page 68: ...larms None Diag None Temporary Current Previous Last Counts 15 mins 15 mins 24 hours Alarmed time Total secs 856 510 900 86400 LOS 0 0000 0 0000 0 0000 0 0000 LOF 0 0000 0 0000 0 0000 0 0000 AIS 0 000...

Page 69: ...alarms Note YEL Yellow alarms at the PLCP layer are the PLCP layer equivalent of the Physical layer RAI alarm DS3 SDH Sonet PERFORMANCE DATA PERFORMANCE DATA Interface DS3 Interface SDH Sonet Display...

Page 70: ...of frame events YEL Number of PLCP remote alarm events known at the physical layer as RAI PLCP BIP FEBE Frame Errors Summary Style Counts Total seconds Elapsed time of current interval Error count Nu...

Page 71: ...11 3 2002 PLCP PERFORMANCE SUMMARY DS3 Current Alarms None Diag None Temporary Current Previous Last Counts 15 mins 15 mins 24 hours Alarm counts Total Secs 856 510 900 86400 LOF 0 0 0 0 YEL 0 0 0 0 B...

Page 72: ...s LOC Display Description Valid Amount of time in which the statistics are valid LOC Loss of Cell delineation The layer 1 receiver cannot perform HCS alignment owing to 7 consecutive HCS errors TX b w...

Page 73: ...arms None Diag None Temporary Counts Current 15 mins Previous 15 mins Last 24 hours Valid Secs 1400 654 900 86400 LOC Secs 0 0 0 0 Tx Cells 0 0 0 0 B w usage 0 0000 0 0000 0 0000 0 0000 Rx Cells 0 0 0...

Page 74: ...000 0 0 14 39 23 0 0000 0 0000 0 0000 0 0 14 54 23 0 0000 0 0000 0 0000 0 0 15 09 23 0 0000 0 0000 0 0000 0 0 15 24 23 0 0000 0 0000 0 0000 0 0 15 39 23 0 0000 0 0000 0 0000 0 0 15 54 23 0 0000 0 0000...

Page 75: ...If the Sequence Number counter is cycling correctly and contains no errors the 47 byte payload is added to the re assembly buffer located in the ATM CBR DSU The Sequence Number is CRC checked and erro...

Page 76: ...1 Display parameters PERFORMANCE DATA Interface E1 Display mode Updated summary Summary style G 821 Phys layer stats display Error type LCV Errors ATM layer stats display Clear all data HIGHLIGHTED le...

Page 77: ...s 24 hours Valid Secs 800 600 900 86400 LOSEQ Secs 0 0 0 0 Seg Cells 76800000 57600000 86400000 8294400000 B w usage 100 0000 100 0000 100 0000 100 0000 Reass Cells 0 0 0 0 B w usage 0 0000 0 0000 0 0...

Page 78: ...ANALYSING PERFORMANCE 76 02 031E 68...

Page 79: ...ocal LAN or on a remote LAN connected to the local LAN via a LAN bridge or IP router When the SNMP Enabler is fitted to the DSU the MAIN SET UP menu contains the option MANAGEMENT Figure 7 1 Main set...

Page 80: ...it is a future release item but is included here to indicate its forthcoming availability For further information on the management interface and the MIB definition refer to the LM1100 SNMP Enabler u...

Page 81: ...able for the CBR LINE port Local loop Two types of test loops are available for the ATM UNI port Local Loop Outside Loop Diagrams showing the functioning of these test loops are given in Figure 8 2 an...

Page 82: ...his therefore validates the signal flow through the ATM CBR DSU as seen from the CBR port of the DSU 8 2 3 UNI Port Outside loop When this test is activated the DSU loops the signal at the UNI interfa...

Page 83: ...TEST TROUBLESHOOTING 73 76 02 031E Figure 8 2 Local loop Outside loop tests CE I F UNI I F CELL MATRIX WAN AAL1 CPU CE I F UNI I F CELL MATRIX WAN AAL1 CPU CE I F UNI I F CELL MATRIX WAN AAL1 CPU...

Page 84: ...LED e If the LINE MINOR alarm LED is on check that the PABX is configured correctly Step 2 Establish and verify the ATM UNI Link Repeat steps a to d for the ATM UNI port noting that there is only a s...

Page 85: ...en selecting the E1 interface from the two port identities displayed Figure 9 1 E1 set up 9 3 1 Framing E1 physical layer framing is fixed as UNFRAMED 9 3 2 Line Coding LINE CODING is fixed with a val...

Page 86: ...nnel to be used for circuit emulation traffic VCI values between 0 and 65535 can be selected Notes a If VPI 0 and VCI 0 then the traffic generated cannot be distinguished from idle cells and will be d...

Page 87: ...ponses 9 7 E1 Error Types BPV errors may be gathered to generate performance data Figure 9 5 E1 Error types Alarm Response LOS MAJOR alarm lamp lights Other port transmits according to its AIS RAI for...

Page 88: ...E1 CBR PORT CONFIGURATION 76 02 031E 78...

Page 89: ...n selecting the E2 interface from the two port identities displayed Figure 10 1 E2 set up 10 3 1 Framing E2 physical layer framing is fixed as UNFRAMED 10 3 2 Line Coding LINE CODING is fixed with a v...

Page 90: ...Channel to be used for circuit emulation traffic VCI values between 0 and 65535 can be selected Notes a If VPI 0 and VCI 0 then the traffic generated cannot be distinguished from idle cells and will b...

Page 91: ...ponses 10 7 E2 Error Types BPV errors may be gathered to generate performance data Figure 10 5 E2 Error types Alarm Response LOS MAJOR alarm lamp lights Other port transmits according to its AIS RAI f...

Page 92: ...E2 CBR PORT CONFIGURATION 76 02 031E 82...

Page 93: ...UP and then selecting the E3 interface from the two port identities displayed Figure 11 1 E3 Set up 11 3 1 Framing E3 physical layer framing is fixed as UNFRAMED 11 3 2 Line Coding LINE CODING is fixe...

Page 94: ...annel to be used for circuit emulation traffic VCI values between 0 and 65535 can be selected Notes a If VPI 0 and VCI 0 then the traffic generated cannot be distinguished from idle cells and will be...

Page 95: ...ponses 11 7 E3 Error Types LCV errors may be gathered to generate performance data Figure 11 5 E3 Error types Alarm Response LOS MAJOR alarm lamp lights Other port transmits according to its AIS RAI f...

Page 96: ...E3 CBR PORT CONFIGURATION 76 02 031E 86...

Page 97: ...electing the DS3 interface from the two port identities displayed Figure 12 1 DS3 Set up 12 3 1 Framing DS3 physical layer framing is fixed as UNFRAMED 12 3 2 Line Coding LINE CODING is fixed with a v...

Page 98: ...Virtual Channel to be used for circuit emulation traffic VCI values between 0 and 65535 can be selected Notes a If VPI 0 and VCI 0 then the traffic generated cannot be distinguished from idle cells an...

Page 99: ...esponses 12 7 DS3 Error Types LCV errors may be gathered to generate performance data Figure 12 5 DS3 Error types Alarm Response LOS MAJOR alarm lamp lights Other port transmits according to its AIS R...

Page 100: ...DS3 CBR PORT CONFIGURATION 76 02 031E 90...

Page 101: ...payload 13 4 E3 ATM layer The payload carries 10 ATM cells per E3 frame giving a cell rate of 80 000 cells per second 13 5 E3 WAN Set up The E3 port parameters are set by selecting the path MAIN SET U...

Page 102: ...mask to be forwarded rather than deleted 13 7 HCS coset The HCS COSET option allows the HCS to be X ORed with 0x55 so that the idle cell HCS is non zero Mode Description Never AIS never transmitted fr...

Page 103: ...in the cell 13 8 E3 ATM masks The DSU deletes cells whose headers match the mask identified by the IDLE CELLS entry Note that idle cells have a CLP bit set to 1 while unassigned cells have this bit s...

Page 104: ...gnment word errors BIP 8 BIP 8 parity errors FEBE FEBE s Far End Block Errors giving statistics based upon far end receiver performance Display Description LOS Loss of Signal the Layer 0 receiver cann...

Page 105: ...OF MAJOR alarm lamp lights E3 port transmits RAI Other port transmits according to its AIS RAI forwarding configuration SQ MAJOR alarm lamp lights E3 port transmits RAI Other port transmits according...

Page 106: ...E3 UNI PORT CONFIGURATION 76 02 031E 96...

Page 107: ...f 12 ATM cells making 636 bytes of payload together with 49 bytes of overhead 14 4 DS3 ATM layer The cell rate is 96 000 cells per second 14 5 DS3 WAN Set up The DS3 port parameters are set by selecti...

Page 108: ...AI forwarding Mode Description Never AIS never transmitted from the DS3 port On RAI AIS transmitted from the DS3 port when RAI on the other port On LOF AIS AIS transmitted from the DS3 port when LOF A...

Page 109: ...d scrambling PAYLOAD SCRAMBLING prevents cell traffic from ghosting Frame Alignment patterns and thereby causing false framing The default value is disabled 14 6 4 Idle cell payload The IDLE CELL PAYL...

Page 110: ...the path MAIN SET UP ATM MASKS DS3 PORT Figure 14 6 DS3 ATM masks 14 8 DS3 Physical layer error types Errors within the following primitives may be gathered to generate performance data Figure 14 7 D...

Page 111: ...ving the outgoing transmission properly OOSP Out Of Spec Clock caused by the TX PLL having problems locking Alarm Response LOS MAJOR alarm lamp lights DS3 port transmits RAI Other port transmits accor...

Page 112: ...DS3 UNI PORT CONFIGURATION 76 02 031E 102...

Page 113: ...configuration 15 6 TAXI ATM Set Up The configuration of the TAXI port ATM characteristics are set using the path MAIN SET UP ATM SET UP TAXI PORT Figure 15 1 TAXI ATM Set up 15 6 1 Forward Idle Cells...

Page 114: ...larm Response In the presence of an alarm condition on the TAXI port the following responses are established Figure 15 4 TAXI Alarm responses 15 10 TAXI Error Types There are no physical layer primiti...

Page 115: ...16 3 SDH Sonet PLCP Layer ATM cell payload is byte aligned with the SDH Sonet frames 16 4 SDH Sonet ATM Layer The cell rate is 353208 cells per second Connector Type Fibre Type Wavelength Typical Tx P...

Page 116: ...igure 16 4 SDH Sonet timing 16 5 3 AIS Forwarding AIS FORWARDING is used to select the AIS Alarm Indication Signal alarm forwarding mode Options are Figure 16 5 SDH Sonet AIS forwarding SDH SONET PORT...

Page 117: ...cell traffic from ghosting Frame Alignment patterns and thereby causing false framing The default value is enabled 16 6 4 Idle Cell Payload The IDLE CELL PAYLOAD option allows special patterns to be...

Page 118: ...SONET Figure 16 8 SDH Sonet ATM masks 16 8 SDH Sonet Physical Layer Alarms The SDH Sonet physical layer alarms that are detected are as follows Figure 16 9 SDH Sonet Physical alarms SDH SONET PORT 1...

Page 119: ...transmits RAI Other port transmits according to its AIS RAI forwarding configuration AIS MINOR alarm lamp lights SDH Sonet port transmits RAI Other port transmits according to its AIS RAI forwarding c...

Page 120: ...SDH Sonet UNI PORT CONFIGURATION 76 02 031E 110...

Page 121: ...ER TOLERANCE per G 823 FRAMING LAYER 1 Unframed PLCP LAYER 11 2 none ATM LAYER 2 none AAL1 LAYER 5446 cells second ERROR TYPES BPV E2 CBR port INTERFACE TYPE E2 PHYSICAL LAYER 0 BNC 75 Ohm coax BARRIE...

Page 122: ...823 FRAMING LAYER 1 Unframed PLCP LAYER 11 2 none ATM LAYER 2 none AAL1 LAYER 91404 cells second ERROR TYPES LCV DS3 CBR port INTERFACE TYPE DS3 PHYSICAL LAYER 0 BNC 75 Ohm coax BARRIER EN 41003 comp...

Page 123: ...832 G 804 PLCP LAYER 11 2 none ATM LAYER 2 80 000 cells second ATM LAYER ERRORS HEC PHYSICAL LAYER ERRORS LCV Frame REBE BIP 8 DS3 UNI PORT INTERFACE TYPE DS3 PHYSICAL LAYER 0 BNC 75 Ohm coax DATA RA...

Page 124: ...PHYSICAL LAYER 0 ST connector pair multi mode fibre or PHYSICAL LAYER 0 Dual SC connector multi mode fibre or PHYSICAL LAYER 0 Dual SC connector single mode fibre short haul or PHYSICAL LAYER 0 Dual S...

Page 125: ...F TYPE SONET OC 3 STS 3 SDH STM 1 PHYSICAL LAYER 0 Dual BNC connectors or PHYSICAL LAYER 0 ATM User Device RJ45 connector or PHYSICAL LAYER 0 ATM Network Equipment RJ45 connector DATA RATE 155 52 Mbp...

Page 126: ...Statistics database Real time statistics time stamped and logged in a database accumulating over 15 minutes 96 x 15 minute buckets are stored for rolling 24 hour database General Definition Power sup...

Page 127: ...r Violation CBR Constant Bit Rate CE Circuit Emulation CMI Coded Mark Inversion CRC Cyclic Redundancy Check DM Degraded Minutes DSU Data Service DSU DCE Data Communication Equipment DTE Data Terminal...

Page 128: ...ock Alarm PLCP Physical Layer Convergence Protocol PVC Permanent Virtual Channel RAI Remote Alarm Indication aka FERF REBE Remote End Block Error SAR Segmentation And Reassembly SDH Synchronous Digita...

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