DEFINITY ECS Release 8.2 Maintenance for R8.2csi
555-233-119 Issue 1
April 2000
Maintenance Objects
3-962PRI-CDR/SEC-CDR (PRI-CDR Link)
3
The data extension can be a PDM, MPDM, DTDM, or ADU. The PDM,
MPDM, and DTDM connect to a Digital Line Port of TN754 or TN754B
Digital Line circuit pac k; ADU connects to a Data Line Port of TN726 Data
Link circuit pac k.
NOTE:
In duplicated systems it is possible for a failure on one of the
processor circuit p acks to bring dow n the CDR link even if it is the
standby proces sor. This problem can not be resolved by
interchanging p rocessors because the CDR ports on eac h of the
processor circui t packs are connected via WIRE-OR.
CDR Link Maintenance does not cover the maintena nce of the elements
composing the CDR ph ysical link, which are as follows:
■External CDR output device
■EIA port on Processor circuit p ack
■Data Module (PDM/MPDM/DTDM) and Digital Line Port of TN754 or
TN754B Digital Line circuit pac k
■ADU and Data Line Port of TN726 Data Link circuit pac k
■Data Channels on the TN798 Processor circuit pac k
If CDR Link Maintenance cannot restore the CDR link, then the maintenance tests
of these individual comp onents of the CDR link must be executed to d iagnose
faults.
Procedures for Restoring the CDR Link
1. Get the status of CDR links.
Enter status cdr-link command and make sure that the CDR links are not
busied out for maintenance. If the link is down, then continue to the next
step.
2. Where does the CDR link connect to?
Enter display system feature and find out the destinations of CDR links.
Continue to the next step.
3. Is the destination an extension or the EIA port?
If the destination is an extension number, then enter the status data
extension command and verify whether the data extension is in the
in-service/idle state. If the d ata extension is NOT available, then look for
the extension number in the Alt Name field of Hard ware Error Log and
refer to ‘‘XXX-BD ( Common Port Ci r cuit Pa ck)’’ Maintenance
documentation for resolutions.