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10-8 Service verification
Verification of PRI facility on the DMS-250 switch
This section defines the possible states for the following PRI components:
PRI datafill verification
The PRI-related tables fall into two categories: facility-related and
service-related.
The PRI facility-related tables consist of
The PRI service-related tables consist of
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
Carrier fail (CFL)
Call processing busy
(CPB)
297-2521-106 Standard 23.01 March 2001
PRI trunk
carrier
ISDN digital trunk controller (DTCI)
D-channel
table TRKGRP
table TRKSGRP
table TRKMEM
table LTDEF
table LTCALLS
table LTMAP
Explanation
The circuit is removed from service because of a failure associated
with the DS-1.
The facility or member is currently carrying traffic; thus, the facility
is busy.
—continued—
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