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ATM-TRK (Circuit Emulation Service Circuit Pack)
Issue 4 May 2002
10-249
555-233-123
ATM Board Framer Looparound 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 signalling link between the board and the ATM switch is down.
34
AAL5 Excessive retransmission requests -per VC
35
LAPD Excessive retransmission requests - per VC
37
ATM CLP (Cell Loss Priority) Bit - see MO ATM-NTWK
38
ATM Congestion Indicator - see MO ATM-NTWK
39
ATM Cell Underrun - see MO ATM-NTWK
40
ATM Cell Overrun - see MO ATM-NTWK
41
ATM Lost Cells - see MO ATM-NTWK
Table 10-101.
Aux Data YY for ATM Board Error Query Test (#1259) — Continued
If YY=
Then
Continued on next page
Содержание Definity SI
Страница 1: ...0DLQWHQDQFH IRU YD D 1 7 6HUYHU 6 Volumes 1 2 and 3 555 233 123 Issue 4 May 2002...
Страница 62: ...Maintenance Architecture 555 233 123 1 26 Issue 4 May 2002...
Страница 92: ...Management Terminals 555 233 123 3 26 Issue 4 May 2002...
Страница 204: ...Routine Maintenance Procedures 555 233 123 5 100 Issue 4 May 2002...
Страница 250: ...LED Interpretation 555 233 123 7 10 Issue 4 May 2002...
Страница 2763: ...VC DSPPT Issue 4 May 2002 10 1977 555 233 123 Figure 10 107 VC Circuit Pack DSP Port Local TDM Loopback Test...
Страница 2776: ...Maintenance Object Repair Procedures 555 233 123 10 1990 Issue 4 May 2002 Figure 10 109 VC Circuit Pack Summer Port Loopback Test...
Страница 2804: ...Maintenance Object Repair Procedures 555 233 123 10 2018 Issue 4 May 2002...
Страница 2968: ...Index 555 233 123 IN 10 Issue 4 May 2002...