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DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si

555-230-127

Issue 1

August 1997

Maintenance Object Repair Procedures

Page 10-741

ISDN-SGR (ISDN-PRI Signaling Group)

Secondary Signaling Link Hardware Check (#639)

The ISDN-PRI Signaling Group D-Channel port depends on the health of the
DS1/UDS1 Interface circuit pack on which it resides. This test will fail if there are
problems with either the ISDN-PRI Primary D-channel port or the DS1/ UDS1
circuit pack. If there are problems with the ISDN-PRI Secondary Signaling
Channel port (ISDN-LNK or ISDN-PLK), also investigate the DS1/UDS1 circuit
pack.

Figure 10-56.

Secondary Signaling Link Hardware Check for PRI over PI

(Test #639)

PASS

A message was composed and sent to the Far-end switch. The ISDN PRI
specification allows up to two minutes for a reply.

1. Check the Error Log for ISDN-SGR (ISDN-PRI Signaling Group) for

errors of type 2305 for evidence of a Remote Layer 3 Query failure. If no
new errors were logged since this test was run, then this switch and the
Far-end switch processor can exchange call control messages.

2. If there is still a problem with a particular DS1 ISDN Trunk or PRI

Endpoint Port (B-channel), busyout the trunk or port and run the long
test sequence, paying particular attention to the results of Test #258
(ISDN Test Call).

Table 10-244.

TEST #637 Remote Layer 3 Query —

Continued

Error
Code

Test

Result

Description/Recommendation

Continued on next page

TDM

BUS

DS1/UDS1

TO FAR-END

SWITCH HARDWARE

(TN765)

CIRCUIT

PACK CIRCUIT

PACK

INTERFACE