ATM-TRK (Circuit Emulation Service Circuit Pack)
Issue 1 May 2002
8-293
555-233-143
ATM Board Framer Loop-Around Test (#1260)
Destructive
This test verifies the board’s circuit (Time Division Multiplexing) and packet paths
using an on-board, dummy virtual circuit. Before running the test, you must
■
busyout the ATM-TRK circuit pack (busyout board UUCSS) and
■
switch synchronization (change synchronization) from the ATM-TRK
circuit pack
If the ATM-TRK circuit pack is supplying synchronization, the test aborts.
The test sends a digital counter from one of the Tone Generators via one of the
TDM bus time slots. The ATM framer interface converts this digital counter to
ATM cells and loops them back internally. The ATM-TRK circuit pack converts the
cells back to a digital counter and sends it to the tone receiver for verification. If
the circuit pack passes the circuit check, the software checks the packet path by
sending a packet from the packet-interface circuit pack to the ATM-TRK circuit
pack via the ATM protocol stack.
22
High-level path alarm indication signal
23
High-level path remote defect indicator
24
Loss of cell delineation
25
Uncorrectable headers sent by the ATM switch
26
Too many cells with invalid VPI/VCI combination
27
The signaling link between the board and the ATM switch is down.
34
Excessive AAL-5 retransmission requests - per VC
35
Excessive LAP-D retransmission requests - per VC
37
ATM CLP (cell loss priority) bit – see MO
‘‘ATM-NTWK (ATM Network Error)’’
38
ATM congestion indicator – see MO
‘‘ATM-NTWK (ATM Network Error)’’
39
‘‘ATM-NTWK (ATM Network Error)’’
40
ATM cell overrun – see MO
‘‘ATM-NTWK (ATM Network Error)’’
41
Lost ATM cells – see MO
‘‘ATM-NTWK (ATM Network Error)’’
Table 8-128.
Aux Data YY for ATM Board Error Query Test (#1259)
If YY=
Then
Continued on next page
Содержание S8700 Series
Страница 50: ...Maintenance Architecture 555 233 143 1 26 Issue 1 May 2002 ...
Страница 74: ...Initialization and Recovery 555 233 143 3 12 Issue 1 May 2002 ...
Страница 186: ...Alarms Errors and Troubleshooting 555 233 143 4 112 Issue 1 May 2002 ...
Страница 232: ...Additional Maintenance Procedures 555 233 143 5 46 Issue 1 May 2002 ...
Страница 635: ...status psa Issue 1 May 2002 7 379 555 233 143 status psa See status tti on page 7 406 ...
Страница 722: ...Maintenance Commands 555 233 143 7 466 Issue 1 May 2002 ...
Страница 1121: ...CARR POW Carrier Power Supply Issue 1 May 2002 8 399 555 233 143 Figure 8 19 Power Distribution Unit J58890CH 1 ...
Страница 1447: ...E DIG RES TN800 reserve slot Issue 1 May 2002 8 725 555 233 143 E DIG RES TN800 reserve slot See ASAI RES ...
Страница 1735: ...LGATE AJ Issue 1 May 2002 8 1013 555 233 143 LGATE AJ See BRI SET LGATE BD See BRI BD LGATE PT See BRI PT ...
Страница 1846: ...Maintenance Object Repair Procedures 555 233 143 8 1124 Issue 1 May 2002 Figure 8 62 TN787 MMI MULTIMEDIA INTERFACE CIRCUIT PACK ...