AudioCodes E-SBC User Manual

CHAPTER26 Manipulation
Mediant 1000 Gateway & E-SBC | User's Manual
3. Configure a mapping rule according to the parameters described in the table below.
4. Click Apply.
Table 26-12:Release Cause Mapping ISDN to ISDN Table Parameter Descriptions
Parameter Description
'Index'
[CauseMapIsdn2Isdn_
Index]
Defines an index number for the new table row.
Note: Each row must be configured with a unique index.
'Orig. Q.850 Causes'
orig-q850-cause
[CauseMapIsdn2Isdn_
OrigIsdnReleaseCause]
Defines the originally received ISDN Q.850 cause code. For
example, you can enter "127" (without apostrophes) to represent
cause code 127 Interworking, Unspecified.
The valid value (cause code) is 1 to 127.
'Map Q.850 Causes'
map-q850-cause
[CauseMapIsdn2Isdn_
MapIsdnReleaseCause]
Defines the ISDN Q.850 cause code to which you want to change
the originally received cause code. For example, you can enter
"16" (without apostrophes) to represent cause code 16 Normal
Call Clearing.
The valid value (cause code) is 1 to 127.
SIP Reason Header for Release Cause
The device supports the SIP Reason header according to RFC 3326. The Reason header
describes the disconnection cause of a call:
■ Sending Reason header: If a call is disconnected from the Tel side (ISDN), the Reason
header contains the value of the received Q.850 cause in the appropriate message
(BYE/CANCEL/final failure response) and sent to the IP side. If the call is disconnected
because of a SIP reason, the Reason header is set to the appropriate SIP response.
■ Receiving Reason header: If a call is disconnected from the IP side and the SIP message
includes the Reason header, it is sent to the Tel side according to the following logic:
● If the Reason header includes a Q.850 cause, it is sent as is.
● If the Reason header includes a SIP response:
◆ If the message is a final response, the response status code is translated to Q.850
format and passed to ISDN.
◆ If the message isn’t a final response, it is translated to a Q.850 cause.
● When the Reason header is received twice (i.e., SIP Reason and Q.850), the Q.850 takes
precedence over the SIP reason and is sent to the Tel side.
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AudioCodes E-SBC Specifications

General

Brand	AudioCodes
Model	E-SBC
Category	Gateway
Language	English