Version 6.6 303 Mediant 2000
User's Manual 23. Manipulation
versa. This allows you to override the default release cause mappings between ISDN and
SIP, as described in 'Fixed Mapping of ISDN Release Reason to SIP Response' on page
305 and 'Fixed Mapping of SIP Response to ISDN Release Reason' on page 303.
Notes:
• For Tel-to-IP calls, you can also map the less commonly used SIP responses to a
single default ISDN Release Cause, using the DefaultCauseMapISDN2IP
parameter. This parameter defines a default ISDN Cause that is always used
except when the following Release Causes are received: Normal Call Clearing
(16), User Busy (17), No User Responding (18) or No Answer from User (19).
• The release cause mapping tables can also be configured using the ini file:
1) Release Cause Mapping from ISDN to SIP table: CauseMapISDN2SIP (ini).
2) Release Cause Mapping from SIP to ISDN table:CauseMapSIP2ISDN (ini).
To configure Release Cause mapping:
1. Open the Release Cause Mapping page (Configuration tab > VoIP menu > GW and
IP to IP submenu > Manipulations > Release Cause Mapping).
Figure 23-6: Release Cause Mapping Page
2. In the 'Release Cause Mapping from ISDN to SIP' group, map different Q.850 Release
Causes to SIP Responses.
3. In the 'Release Cause Mapping from SIP to ISDN' group, map different SIP
Responses to Q.850 Release Causes.
4. Click Submit to apply your changes.
23.8.1 Fixed Mapping of SIP Response to ISDN Release Reason
The following table describes the mapping of SIP response to ISDN release reason.
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