Configuring Release Cause Mapping; Sip-To-Isdn Release Cause Mapping; Configuring Sip-To-Isdn Release Cause Mapping - AudioCodes Mediant 1000 User Manual

Enterprise session border controller (e-sbc) and media gateway

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Configuring Release Cause Mapping

When a call is disconnected, the reason for the disconnection (or call failure) is sent by the

side (IP or Tel) on which the call disconnection occurred. From the IP side, a SIP response

is sent (e.g., 406); from the Tel side, an ISDN cause code is sent (e.g., 6). You can

configure ISDN-SIP release cause mapping rules, as discussed in this section.

The Release Cause Mapping from SIP to ISDN table lets you configure up to 12 SIP

response code to ISDN ITU-T Q.850 release cause code (call failure) mapping rules. The

table lets you override the default SIP-to-ISDN release cause mappings, listed in ''Fixed

Mapping of SIP Response to ISDN Release Reason'' on page 522. When the device

receives a SIP response from the IP side, it searches the table for a matching SIP

response. If found, the device sends the corresponding Q.850 Release Cause to the

PSTN. If the SIP response is not configured in the table, the default, fixed SIP-to-ISDN

release reason mapping is used.

single, default ISDN release cause code, using the DefaultCauseMapISDN2IP

parameter. The parameter defines a default ISDN cause code 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 following procedure describes how to configure SIP-to-ISDN release cause mapping

through the Web interface. You can also configure it through ini file (CauseMapSIP2ISDN)

or CLI (configure voip > gateway manipulation cause-map-sip2isdn).

To configure a SIP-to-ISDN release cause mapping rule:

Open the Release Cause Mapping from SIP to ISDN table (Setup menu > Signaling

& Media tab > Gateway folder > Manipulation > Release Cause SIP > ISDN).

The feature is applicable only to digital interfaces.

For Tel-to-IP calls, you can also map less commonly used SIP responses to a

Mediant 1000B Gateway & E-SBC

24. Manipulation

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