AudioCodes Mediant 800 - Page 467

CHAPTER19 Coders and Profiles
Mediant 800 Gateway & E-SBC | User's Manual
Parameter Description
If you have enabled the parameter, you can also configure
the device to stop sending DTMF digits using the SIP
INFO method if the device receives a SIP re-INVITE (or
UPDATE) from the SIP entity to where the SIP INFO is
being sent (and keep sending the DTMF digits using the
RFC 2833 method). This is done using the AudioCodes
proprietary SIP header X-AC-Action and a Message
Manipulation rule (inbound) to instruct the device to switch
to a different IP Profile that is configured to disable the
sending of DTMF digits using both methods (i.e., 'Send
Multiple DTMF Methods' is configured to Disable):
X-AC-Action: 'switch-profile;profile-
name=<IP Profile Name>'
If the IP Profile name contains one or more spaces, you
must enclose the name in double quotation marks, for
example:
X-AC-Action: 'switch-profile;profile-
name="My IP Profile"'
The Message Manipulation rule adds the proprietary header
with the value of the new IP Profile to the incoming re-
INVITE or UPDATE message and as a result, the device
uses the new IP Profile for the SIP entity and stops
sending it SIP INFO messages. You can also configure an
additional Message Manipulation rule to re-start the
sending of the SIP INFO. For example, you can configure
two Message Manipulation rules where the sending of both
SIP INFO and RFC 2833 depends on the negotiated media
port -- the device stops sending SIP INFO if the SDP of the
re-INVITE or UPDATE message contains port 7550 and re-
starts sending if the port is 8660. The rule that re-starts the
SIP INFO switches the IP Profile back to the initial IP
Profile that enables the sending of DTMF digits using both
methods (i.e., 'Send Multiple DTMF Methods' is configured
to Enable). The configured Message Manipulation rules for
this example are shown below:
■ Index 1
✔ Message Type: reinvite.request
✔ Condition: body.sdp regex (.*)(m=audio 7550
RTP/AVP)(.*)
✔ Action Subject: header.X-AC-Action
✔ Action Type: Add
✔ Action Value: 'switch-profile;profile-name=ITSP-
Profile-2'
■ Index 2
✔ Message Type: reinvite.request
✔ Condition: body.sdp regex (.*)(m=audio 8660
RTP/AVP)(.*)
✔ Action Subject: header.X-AC-Action
✔ Action Type: Add
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