2N BRI Lite/Enterprise v1.4 User Manual
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Error GSM/UMTS causes
Set the ISDN release cause for each of the below mentioned statuses. Every call
that meets any of the below mentioned requirements, will be rejected with a user
defined cause (the ISDN cause number will be translated to VoIP as a SIP code
as defined below).
Lack of digits in OVERLAP mode – any call that fails to meet the minimum
digits count requirement will be rejected.
Restricted number prefix – any call whose prefix is not included in any of
the prefix lists will be rejected.
Selected module / GSM group is not ready – a call will be rejected in case
there is no available GSM module in the selected (by LCR) outgoing GSM
group.
Selected module / GSM groups are not ready – a call will be rejected in
case there is no available GSM module in the selected (by LCR) outgoing
GSM groups.
Cause translation
The release cause received from GSM/UMTS can be converted into another ISDN
release cause. The resultant ISDN cause number will be converted into a SIP code
according to the table below:
Conversion table:
ISDN cause
value
Description
SIP
code
Description
1
Unallocated number
410
Gone
3
No route to destination
404
Not found
6
Channel unacceptable
503
Service unavailable
16
Normal call clearing
BYE
17
User busy
486
Busy here
18
No user responding
480
Temporarily
unavailable
19
No answer from user
480
Temporarily
unavailable
21
Call rejected
603
Decline
22
Number changed
410
Gone
27
Destination out of order
404
Not found
28
Address incomplete
484
Address incomplete