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NCAUUI 15-21
The T308 timer is the RELease sent timer. The default is 4 seconds. After a
Q.931 RELease or DISConnect message is sent, timer T308 is started. This
timer is stopped upon receiving the Q.931 RELease COMPlete. Timer T308
is datafilled in table ISDNPROT. However, datafilling timer T308 in table
ISDNPROT affects all PRI calls for that protocol variant and not just
NCAUUI calls.
If timer T308 expires before receiving the Q.931 RELease COMPlete
message, the DMS-250 switch sends a Q.931 RELease COMPlete message
to the end user that sends the Q.931 RELease COMPlete message.
T(connrel) Connection Release Timer
T(connrel) timer is the connection release timer where the DMS-250 switch
is waiting to receive an SCCP RLC message. The default is 10 seconds.
T(connrel) timer is started after the terminating DMS-250 switch sends the
SCCP RLSD message to the originating DMS-250 switch. This timer is
stopped upon receiving the SCCP RLC message. This timer is datafilled in
table SCCPTMR. The T(connrel) timer has a value between 10 to 20
seconds.
If T(connrel) timer expires, the DMS-250 switch sends an SCCP RLSD
message and restart T(connrel). This process continues until T(interval)
expires.
DAP
All NCAUUI calls go to the DAP for translation. All NCAUUI requests are
received in traditional call requests that invoke VNET or FLEXSAC
processing. DAP interaction is necessary to ensure TSID and TTG are
obtained from the DAP for the called party
Digital Switching Systems DMS-250 ISDN Reference Manual MWC14 (CSP14)
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