Nortel DMS-250 - Verification of PRI Facility on the DMS-250 Switch; PRI Datafill Verification; Interpreting PRI Trunk States on the DMS-250 Switch

10-8 Service verification
297-2521-106 Standard 23.01 March 2001
Verification of PRI facility on the DMS-250 switch
This section defines the possible states for the following PRI components:
• PRI trunk
• carrier
• ISDN digital trunk controller (DTCI)
• D-channel
PRI datafill verification
The PRI-related tables fall into two categories: facility-related and
service-related.
The PRI facility-related tables consist of
• table TRKGRP
• table TRKSGRP
• table TRKMEM
The PRI service-related tables consist of
• table LTDEF
• table LTCALLS
• table LTMAP
If the trunk group has not been associated with a logical terminal identifier
(LTID) in table LTMAP, PRI is not accessible. This may be verified by
scanning the tuple in table TRKGRP for an LTID (for example, ISDN 999).
Interpreting PRI trunk states on the DMS-250 switch
Table 10-1 lists PRI trunk states.
Table 10-1
PRI trunk states
PRI trunk state
Explanation
Carrier fail (CFL) The circuit is removed from service because of a failure associated
with the DS-1.
Call processing busy
(CPB)
The facility or member is currently carrying traffic; thus, the facility
is busy.
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