Lucent Technologies DEFINITY Enterprise Communications Server Release 6 Instructions Manual

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Responding to Alarms and Errors 
Page 5-41 Troubleshooting ISDN-BRI/ASAI Problems 
5
Figure 5-11. Troubleshooting ISDN-BRI Problems (Page 2 of 2)
PAGE
NOYES
END
FROM
1
IS THE
PROBLEM AFFECTING
MOs ON MULTIPLE
BRI-BD CIRCUIT
IS THE
PROBLEM AFFECTING
MULTIPLE MOs ON
THE SAME BRI-BD
CIRCUIT
A
NO
FOLLOW THE REPAIR
PROCEDURE FOR BRI-PORT,
BRI-DAT, ABRI-PORT, BRI-SET,
OR ASAI-ADJ, AS...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Responding to Alarms and Errors 
Page 5-42 Troubleshooting ISDN-PRI Test Call Problems 
5
Troubleshooting ISDN-PRI Test Call 
Problems
An ISDN-PRI test call is placed across an ISDN-PRI user-network interface to a 
previously designated number in order to test ISDN capabilities of the switch, the 
trunk and the far end. An ISDN-PRI test call is also a maintenance procedure 
concerned...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Responding to Alarms and Errors 
Page 5-43 Troubleshooting ISDN-PRI Test Call Problems 
5
Asynchronous Method
The asynchronous method requires a Maintenance/Test circuit pack to be 
present in the system. In this method, 4 commands are used to start, stop, query, 
and list an outgoing ISDN-PRI test call:
Before placing an outgoing ISDN-PRI test call, verify that the Feature Access...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Responding to Alarms and Errors 
Page 5-44 Troubleshooting the Outgoing ISDN-Testcall Command 
5
The functions of the clear, list, and status commands associated with the ISDN 
Testcall are summarized below. 
clear isdn-testcall: enables you to cancel an in-progress ISDN-PRI test call and 
allow another test call to start.
list isdn-testcall: enables you to list all the ISDN-PRI trunks...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Responding to Alarms and Errors 
Page 5-45 Packet Bus Fault Isolation and Repair 
5
Packet Bus Fault Isolation and Repair
The following procedures provide a means of isolating and correcting faults on 
both the packet bus and the various maintenance objects that use the packet 
bus. The packet bus is shared by all circuit packs that communicate on it, and a 
fault on one of those can...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Responding to Alarms and Errors 
Page 5-46 Packet Bus Fault Isolation and Repair 
5
n‘‘Packet Bus Fault Isolation Flowchart’’ is the starting point for the 
troubleshooting process. It is used to determine if a failure of service is 
caused by the packet bus itself or by another maintenance object on the 
packet bus.
n‘‘Correcting Packet Bus Faults’’ presents the procedures required to...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Responding to Alarms and Errors 
Page 5-47 Packet Bus Fault Isolation and Repair 
5
Tools for Packet Bus Fault Isolation and 
Correction
The following tools may be required on-site to perform packet bus fault isolation 
and correction.
nTN771D Maintenance/Test circuit pack for use in standalone mode, and 
the connectors and cables necessary to install it (see the 
Maintenance/Test...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Responding to Alarms and Errors 
Page 5-48 Packet Bus Fault Isolation and Repair 
5
The SPE interface to the packet bus is the TN1655 Packet Interface circuit pack. 
When SPEs are duplicated, there is one TN1655 in each SPE. The TN771D 
Maintenance/Test Circuit Pack (discussed in detail later) provides packet bus 
maintenance testing and reconfiguration capabilities.
Packet Bus Faults...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Responding to Alarms and Errors 
Page 5-49 Packet Bus Fault Isolation and Repair 
5
nTN771D Maintenance/Test: M/T-BD, M/T-DIG, M/T-PKT
Circuit Packs That Use the Packet Bus
This section describes the circuit packs that use the packet bus and the effects 
of circuit pack and bus failures on each other.
Seven circuit packs can use the packet bus: The maintenance objects pertaining 
to...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Responding to Alarms and Errors 
Page 5-50 Packet Bus Fault Isolation and Repair 
5
nTN464F Universal DS1 circuit pack [UDS1-BD, ISDN-LNK] supports 
ISDN-PRI communications over an attached DS1 facility. It transports of 
D-channel signaling information over the packet bus, and B-channel data 
over the TDM bus. The Universal DS1 circuit pack has the same fault 
detection capabilities...