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Signaling System 7 (SS7)
Cause codes for SS7 ASGCP calls to the TAOS unit
APX 8000/MAX TNT/DSLTNT Physical Interface Configuration Guide Preliminary May 9, 2000 18-21
ft1-caller = 0
calling-number = { "" unknown unknown unspecified unspecified }
force-56kbps = 0
redirect-number = ""
call-direction = 0
global-call-id = 03040506-0102-0900-0807-010203040506
Start and Stop records
The Ascend_Global_Call_Id attribute in the Start and Stop records for SS7 VoIP and data calls
is for call-logging only, not RADIUS, and is reported only when the global call ID is available.
The TAOS unit sends Stop records for SS7 calls that are cleared or rejected at the SS7 IPDC
layer. Those calls do not have Start records, because they are never routed to host cards.
Disconnect cause codes
The following set of disconnect cause codes reports the cause of termination for calls that are
cleared or rejected at the SS7 IPDC layer. These codes are based on the cause codes defined by
ITU-T Recommendation Q.850, Usage of Cause and Location in the Digital Subscriber
Signaling System No. 1 and the Signaling System No. 7 ISDN User Part. This group of cause
codes begins at offset 800.
Event Code Q.850 Definition
DIS_Q850_UNASSIGNED_NUMBER
801
Unallocated (unassigned) number
DIS_Q850_NO_ROUTE
802
No route to specified transit network
DIS_Q850_NO_ROUTE_TO_DEST
803
No route to destination
DIS_Q850_CHANNEL_UNACCEPTABLE
806
Channel unacceptable
DIS_Q850_NORMAL_CLEARING
816
Normal call clearing
DIS_Q850_USER_BUSY
817
User busy
DIS_Q850_NO_USER_RESPONDING
818
No user responding
DIS_Q850_USER_ALERT_NO_ANSWER
819
No answer from user (user alerted)
DIS_Q850_CALL_REJECTED
821
Call rejected
DIS_Q850_NUMBER_CHANGED
822
Number changed
DIS_Q850_DEST_OUT_OF_ORDER
827
Destination out of order
DIS_Q850_INVALID_NUMBER_FORMAT
828
Invalid number format (address
incomplete)
DIS_Q850_FACILITY_REJECTED
829
Facility rejected
DIS_Q850_RESP_TO_STAT_ENQ
830
Response to STATUS ENQUIRY
DIS_Q850_UNSPECIFIED_CAUSE
831
Unspecified normal event
DIS_Q850_NO_CIRCUIT_AVAILABLE
834
No circuit or channel available
DIS_Q850_NETWORK_OUT_OF_ORDER
838
Network out of order