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 5-31 Multimedia Call Handling (MMCH) 
5
Beginning with Release 3.0, the status conference X command shows that MCV 
is in effect by displaying av in the Video Status (Vs) column. Page 3 of the Status 
Conference X Endpoint Y form also has a Broadcaster field that indicates MCV 
is in effect with (SEE-ME) as the broadcaster. The same scenario 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 5-32 Multimedia Call Handling (MMCH) 
5
Audio Echo
Echo in conference calls, particularly those with large delay characteristics, is 
totally disruptive. When Voice Activated Switching is taken into account, the 
effects are disastrous. Various arrangements of the microphone(s) and room 
speaker(s) may be needed.
For some Lucent Technologies...

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 5-33 Troubleshooting ISDN-PRI Problems 
5
Endpoint or I-MUX in Loopback Mode
Some endpoints have a loopback enable feature. This makes DEFINITY MMCH 
data loopback at the MMCH when a connection is in progress. The loopback can 
be enabled prior to or during a connection.
The MMCH does not detect the loop and continues to VAS. In most scenarios,...

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 5-34 Troubleshooting ISDN-PRI Problems 
5
Figure 5-7. Troubleshooting ISDN-PRI (Page 1 of 2)
ARE THERE
ALARMS OR ERRORS
AGAINST UDS1-BD ORDETERMINE PRESENT STATUS
OF DS-1 FACILITYVIA UDS1-BD
OR DS1-BD MO SECTION.
ARE THERE
ALARMS OR
ERRORS AGAINST
ISDN-LINK OR
ISDN-SGRIF MULITPLE ALARMS EXIST,
INVESTIGATE IN FOLLOWING
ORDER:
ISDN-LINK
ISDN-SGR...

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 5-35 Troubleshooting ISDN-PRI Problems 
5
Figure 5-8. Troubleshooting ISDN-PRI (Page 2 of 2)
PAGE
YES END
AFROM
1
ARE
THERE
TRANSIENT
PROBLEMS MAKING
ISDN-PRI
ARE
THERE BIT
ERRORS OVER
HAS A
SYNCHRONIZATION
SOURCE BEEN
SYSTEM SWITCHING
IF PROBLEMS
STILL EXIST,
THEN ESCALATECOMPARE INDICATED
FACILITY TO RECORD
OF PREVIOUS PROBLEMS
ARE BIT
ERRORS...

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 5-36 Troubleshooting ISDN-PRI Endpoints (Wideband) 
5
Troubleshooting ISDN-PRI Endpoints 
(Wideband)
The following flow chart defines a layered approach when troubleshooting PRI 
endpoint problems. Because problems at lower layers affect upper layers, layers 
are investigated from low to high. In this procedure, the DS1 facility is layer 1, the...

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 5-37 Troubleshooting ISDN-PRI Endpoints (Wideband) 
5
 START
¯
Are there alarms or errors against any 
of the following maintenance objects: 
UDS1-BD PKT-INT SYS-LINK 
ISDN-LNK ISDN-SGR PE-BCHLYES 
®Resolve those alarms or errors in the order 
listed at left by following procedures for the 
appropriate maintenance object in Chapter 
9.
¯ NO
Check...

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 5-38 Troubleshooting ISDN-BRI/ASAI Problems 
5
Troubleshooting ISDN-BRI/ASAI 
Problems
Troubleshooting ISDN-BRI/ASAI problems can be a complex and involved 
procedure. The reason for this is that ISDN-BRI devices communicate with the 
SPE over the Packet Bus, as opposed to the TDM Bus. Therefore, it is possible 
for failures of other Packet...

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 5-39 Troubleshooting ISDN-BRI/ASAI Problems 
5
The flowchart in Figure 5-10 describes the steps that should be taken to isolate 
and resolve ISDN-BRI problems. The order in which you should examine the 
maintenance objects is determined by looking at how wide-spread the failure is. 
For example, since all ISDN-BRI devices communicate with the...

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 5-40 Troubleshooting ISDN-BRI/ASAI Problems 
5
Figure 5-10. Troubleshooting ISDN-BRI Problems (Page 1 of 2)
START
ARE THERE
ALARMS OR
ERRORS AGAINST
PKT-BUS NO
YES
IS THIS A
CRITICAL RELIABILITY
SYSTEM?
NOARE THERE
ALARMS OR
ERRORS AGAINST
M/T-PKT YES
IS THE
PROBLEM
ISOLATED TOARE THERE
ALARMS OR ERRORS
AGAINST EXP-INTF*
THE PPN
A TO
PAGE
2IS THE...