ATM-TRK (Circuit Emulation Service Circuit Pack)
Issue 5 October 2002
779
555-233-119
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:
■
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.
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 102.
Aux Data YY for ATM Board Error Query Test (#1259)
—
Continued
If YY=
Then
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