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12

Section 61245207L2-5, Issue 3

61245207L2-5C

The Troubleshooting Display, shown in

Figure 13

,

graphically depicts a DSL circuit. The unit monitors
red, yellow, and blue alarm conditions in the circuit.
Once a fault location is suspected, the corresponding
portion of the circuit on the screen is highlighted and a
message describing the failure will appear.

Figure 13. Troubleshooting Screen

TROUBLESHOOTING DISPLAY

FT1-DP FNID
_____ _____
| | | |
| | | |
--->| | | |<---
| | | |
NET | |<===========================>| | CUST
| | | |
<---| | | |--->
| | | |
| | | |
|_____| |_____|

ALARMS: PROBLEM INDICATED:
FT1-DP CHANNEL BANK ALARM
FT1-DP RED DSL LOSS

Press “M” for Main Menu.

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Содержание DE-4E

Страница 1: ...ption Settings 3 Table 3 SW2 and SW3 Option Settings 4 Table 4 Front Panel Indicators and Switches 5 Table 5 Definition of Screen Abbreviations 7 Table 6 Loop Insertion Loss Data 13 Table 7 Troubleshooting Guide 14 Table 8 FT1 DP Product Specifications 15 Table A 1 FT1 Loopback Select Codes A 1 Section 61245207L2 5C Issue 3 July 2000 CLEI Code D4D31R8D _ _ FT1 DP Fractional T1 Dataport For Nortel ...

Страница 2: ...ternating time slots These slots must not have other channel cards plugged in the slots taken by the FT1 DP bandwidth This will cause contention on the transmit side of the channel bank The FT1 will not wrap around the channels at the end of the channel bank For example if n is equal to 4 channels and the FT1 DP is plugged into slot 23 of the channel bank then only channels 23 and 24 can be used n...

Страница 3: ...to enable or disable automatic loopback timeout Off Automatic loopback timeout is disabled On Loopback timeout is enabled and set for 20 minutes SW1 6 Dumb Smart Channel Bank Enable Used to select dumb or smart channel bank operation Off Unit is provisioned for an NT1 bank with a Smart Transmit Receive Unit STRU installed Two state signaling available smart mode On Unit is provisioned for an NT1 b...

Страница 4: ...sabled On A B Signaling Enabled SW2 7 A B Signaling for Channel 6 Enables or Disables A B Robbed Bit Signaling for Channel 6 Off A B Signaling Disabled On A B Signaling Enabled SW2 6 A B Signaling for Channel 7 Enables or Disables A B Robbed Bit Signaling for Channel 7 Off A B Signaling Disabled On A B Signaling Enabled SW2 5 A B Signaling for Channel 8 Enables or Disables A B Robbed Bit Signaling...

Страница 5: ...2 dB above 10 7 BER Green Good signal quality above 2 dB above 10 7 BER Blinking An error has been detected on the loop Indicates four possible conditions Green The customer side DS1 signal is present and synchronized Yellow Yellow alarm at customer side DS1 Off No customer side DS1 signal present Blinking An error has been detected at FNID input Indicates three possible loopback states Off No act...

Страница 6: ...e presence of a BERT or loopback on the network end of the channel bank level problems that may occur at installation or during operation of the FT1 HDSL system The following subsections describe additional testing features conducted with the front panel Bantam jacks as well as other faceplate features Bantam Jack Description The front panel of the FT1 DP contains DS0 splitting Bantam jacks The me...

Страница 7: ...initiated by entering multiple Figure 5 RS 232 DB 9 Pin Assignments 6 7 8 9 1 2 3 4 5 TXD Transmit Data RXD Receive Data SGN Signal Ground Table 5 Definition of Screen Abbreviations Definition Errored seconds DS1 SF Second in which a BPV or frame bit error occurs DS1 ESF Second in which a BPV or CRC error occurs DSL Second in which a CRC error occurs Severely errored seconds DS1 SF Second in which...

Страница 8: ...st 6 Provisioning 7 Troubleshooting Figure 6 Introductory Menu Screen ADTRAN 901 Explorer Boulevard Huntsville Alabama 35806 2807 For Information or Technical Support Normal Support Hours 7am 7pm CST or Emergency Support Hours 7x24 Voice Toll Free 800 726 8663 Fax 256 963 6217 Voice 256 963 8100 Internet www adtran com FT1 DP INFORMATION SIGNAL QUALITY FNID INFORMATION SIGNAL QUALITY 9 9 S N 8 S N...

Страница 9: ...DSL ELAPSED TIME 00 08 18 CUSTOMER DSL 00 dB LOSS 00 dB NO SYNC NO 000 00000 ES 15M 24H 000 00000 000 00000 SES 15M 24H 000 00000 498 00498 UAS 15M 24H 498 00498 LOOPBACKS INACTIVE LOOPBACKS INACTIVE FT1 DP SIGNAL QUALITY FNID DS1 FNID SIGNAL QUALITY 9 9 8 FRAME SF 8 7 CODE AMI 7 6 LBO 0 dB 6 5 BPV 00000 5 4 ES 00000 4 3 SES 00000 3 2 UAS 00000 2 1 ALARMS NONE 1 0 NO SEALING CURRENT 0 Press Z to z...

Страница 10: ... AT FNID INACTIVE Press corresponding number to toggle loopback option Press M for Main Menu Figure 9 Performance History Screen PERFORMANCE HISTORY VIEW 2 FNID DS1 RECEIVER 24 HOUR REGISTERS 15 MINUTE REGISTERS ES SES ES SES ES SES 00000 00000 CURRENT 000 000 1 1 17 2 2 18 3 3 19 4 4 20 5 PREVIOUS 5 21 6 6 22 7 7 23 8 24 VIEW LOCATION DIAGRAM 9 25 10 26 F F 11 27 T N 12 28 1 3 DSL 4 I 13 29 D D 1...

Страница 11: ... DSO SEQUENCE CONTIGUOUS CONTIGUOUS 7 NUMBER OF DSOS 12 768Kbps 12 768Kbps 8 SIGNALING ENABLED 000000000000 000000000000 CHANNELS 1 12 1 12 1 INDICATES SIGNALING ENABLED ___________________________________________________ ______________________ Press n to change corresponding provision ex 2 for FRAMING H to copy hardware settings to current settings I to implement and save current setting changes ...

Страница 12: ...onditions in the circuit Once a fault location is suspected the corresponding portion of the circuit on the screen is highlighted and a message describing the failure will appear Figure 13 Troubleshooting Screen TROUBLESHOOTING DISPLAY FT1 DP FNID _____ _____ NET CUST _____ _____ ALARMS PROBLEM INDICATED FT1 DP CHANNEL BANK ALARM FT1 DP RED DSL LOSS Press M for Main Menu ...

Страница 13: ...yment criteria is summarized in the chart shown in Figure 14 Recommended maximum local loop loss information for PIC cable at 70 F 135Ω resistive termination is provided in Table 6 An approximation for the maximum amount of wideband noise on a DSL local loop as measured by a 50 kbps filter is 31 dBrn An approximation for the maximum level of impulse noise as measured using a 50 kbps filter on a DS...

Страница 14: ... the FT1 DP is properly seated in the housing 2 Make sure power supply feeding the FT1 DP is good 3 If Steps 1 and 2 pass replace the FT1 DP Power OK but does not achieve Loop Sync DSL LED is off 1 Verify that the loop conforms with CSA guidelines not too long etc 2 Verify that the Loop Loss at 200 kHz is not greater than 36 dB 3 Verify that noise on the DSL Loop is within acceptable limits 4 If S...

Страница 15: ...245211L1 and the ADTRAN FNID P N 1245201L1 Total Power 48 VDC 125 mA with FNID 48 VDC 215 mA with FNID and FT1 Repeater 48 VDC 300 mA with Local Power FNID and two FT1 Repeaters FT1 DP Power Dissipation 3 7 watts with FNID 5 2 watts with FNID and FT1 Repeater 6 1 watts with Local Power FNID and two FT1 Repeaters Span Power 137 V or 190 VDC nominal Fusing1 00 A not field replaceable Clock Sources C...

Страница 16: ...16 Section 61245207L2 5 Issue 3 61245207L2 5C ...

Страница 17: ...U latching loopback command N1010101 or by the craft interface when available The OCU latching loopback code is detected in the primary DS0 of the FT1 circuit the channel where the FT1 DP is physically installed to control the FT1 circuit looping When the FT1 circuit is looped all DS0s in use will be looped back toward the network The DS0s will be transmitted on to the customer The FT1 DP CPE loop...

Страница 18: ...on 2 N1000001 for a single repeater loop or by NEI Position 3 N1000001 for a two repeater loop by the craft interface when available or by the REM LBK button at the FT1 DP The NEI Position 1 latching loopback is detected in the primary DS0 of the FT1 circuit the channel in which the FT1 DP is physically installed to control the looping of the FT1 circuit When the FT1 circuit is looped all DS0s in ...

Страница 19: ...loopback select code allowing for sectionalization of the network during testing Table A 1 is a list of FT1 devices and their loopback select codes Latching loopbacks for the FT1 system are activated by transmitting the following latching loopback sequence in the primary DS0 of the FT1 system A Minimum of 35 transition in progress TIP bytes N0111010 B Minimum of 35 loopback select code LSC bytes a...

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