DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures
9-1738TIE-DS1 (DS1 Tie Trunk)
9
DS1 tie trunk maintenance provides a strateg y to maintain a DS1 tie trunk via a
port on either the TN722 or TN767 DS1 Interface circuit p ack or the TN464C/D
UDS1 Interface circuit pac k. Throughout this TIE-DS1 section, the term DS1
Interface applies t o DS1 and UDS1 circuit packs.
The DS1 tie trunk maintenance strategy covers log ging DS1 tie trunk hardware
errors, running tests for trunk initialization, p eriodic and sc heduled maintenance,
system technician-demand ed tests, and alarm esc alation and resolution. Three
different trunk service states are spec ified in DS1 tie trunk maintenance:
If the DS1 Interface circuit pa ck is out of service, then all trunks on the DS1
Interface circuit p ack are also placed into the out-of-servic e state and a Warning
alarm is raised.
Out-of-service The trunk is deactivated and cannot be used for incoming or
outgoing calls.
In-service The trunk is activated and can be used for both incoming
and outgoing calls.
Disconnect
(ready-for-service) The trunk is in an activated state but can only be used for an
incoming call.