AudioCodes Mediant 600 - Page 610

SIP User's Manual 610 Document #: LTRT-83310
Mediant 600 & Mediant 1000
Parameter Description
identify their SIP Trunking customers by their source phone number
or IP address, reflected in the From header of the SIP INVITE.
Therefore, even customers blocking their Caller ID can be identified
by the service provider. Typically, if the device receives a call with
blocked Caller ID from the PSTN side (e.g., Trunk connected to a
PBX), it sends an INVITE to the IP with a From header as follows:
From: “anonymous” <anonymous@anonymous.invalid>. This is in
accordance with RFC 3325. However, when this parameter is set to
1, the device replaces the "anonymous.invalid" with its IP address.
EMS: P Asserted User Name
[PAssertedUserName]
Defines a 'representative number' (up to 50 characters) that is used
as the user part of the Request-URI in the P-Asserted-Identity header
of an outgoing INVITE (for Tel-to-IP calls).
The default value is null.
EMS: Use URL In Refer To
Header
[UseAORInReferToHeader]
Defines the source for the SIP URI set in the Refer-To header of
outgoing REFER messages.
 [0] = Use SIP URI from Contact header of the initial call (default).
 [1] = Use SIP URI from To/From header of the initial call.
Web: Enable User-
Information Usage
[EnableUserInfoUsage]
Enables the usage of the User Information, which is loaded to the
device in the User Information auxiliary file. (For a description on User
Information, see 'Loading Auxiliary Files' on page 483.)
 [0] Disable (default).
 [1] Enable
[HandleReasonHeader]
Determines whether the device uses the value of the incoming SIP
Reason header for Release Reason mapping.
 [0] Disregard Reason header in incoming SIP messages.
 [1] Use the Reason header value for Release Reason mapping
(default).
[EnableSilenceSuppInSDP]
Determines the device's behavior upon receipt of SIP Re-INVITE
messages that include the SDP's 'silencesupp:off' attribute.
 [0] = Disregard the 'silecesupp' attribute (default).
 [1] = Handle incoming Re-INVITE messages that include the
'silencesupp:off' attribute in the SDP as a request to switch to the
Voice-Band-Data (VBD) mode. In addition, the device includes the
attribute 'a=silencesupp:off' in its SDP offer.
Note: This parameter is applicable only if the G.711 coder is used.
[EnableRport]
Enables the usage of the 'rport' parameter in the Via header.
 [0] = Disabled (default).
 [1] = Enabled.
The device adds an 'rport' parameter to the Via header of each
outgoing SIP message. The first Proxy that receives this message
sets the 'rport' value of the response to the actual port from where the
request was received. This method is used, for example, to enable
the device to identify its port mapping outside a NAT.
If the Via header doesn't include the 'rport' parameter, the destination
port of the response is obtained from the host part of the Via header.
If the Via header includes the 'rport' parameter without a port value,
the destination port of the response is the source port of the incoming
request.
If the Via header includes 'rport' with a port value (e.g., rport=1001),
the destination port of the response is the port indicated in the 'rport'
parmeter.