AudioCodes Mediant 2000, Руководство пользователя

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Version 5.6 123 November 2008
SIP User's Manual 3. Web-Based Management
Parameter Description
Enable Early Media
[EnableEarlyMedia]
Enables the device to send a 183 Session Progress response with SDP
(instead of 180 Ringing), allowing the media stream to be established prior
to the answering of the call.
ƒ
[0]
Disable = Early Media is disabled (default).
ƒ
[1]
Enable = Enables Early Media.
Sending a 183 response depends on the Progress Indicator (PI). It is sent
only if PI is set to 1 or 8 are received in Proceeding or Alert PRI messages.
For CAS devices, see the ProgressIndicator2IP parameter.
183 Message Behavior
[SIP183Behaviour]
Defines the ISDN message that is sent when the 183 Session Progress
message is received for IP-to-Tel calls.
ƒ
[0]
Progress = The device sends a PROGRESS message (default).
ƒ
[1]
Alert = The device sends an ALERT message (upon receipt of a 183
response) instead of an ISDN PROGRESS message.
Session-Expires Time
[SIPSessionExpires]
Determines the numerical value that is sent in the Session-Expires header
in the first INVITE request or response (if the call is answered).
The valid range is 1 to 86,400 sec. The default is 0 (i.e., the Session-
Expires header is disabled).
Minimum Session-
Expires
[MinSE]
Defines the time (in seconds) that is used in the Min-SE header. This
header defines the minimum time that the user agent refreshes the
session.
The valid range is 10 to 100,000. The default value is 90.
Session Expires
Method
[SessionExpiresMeth
od]
Determines the SIP method used for session-timer updates.
ƒ
[0]
Re-INVITE = Uses Re-INVITE messages for session-timer updates
(default).
ƒ
[1]
UPDATE = Uses UPDATE messages.
Notes:
ƒ
The device can receive session-timer refreshes using both methods.
ƒ
The UPDATE message used for session-timer is excluded from the
SDP body.
Asserted Identity Mode
[AssertedIdMode]
Determines whether P-Asserted-Identity or P-Preferred-Identity is used in
the generated INVITE request for Caller ID (or privacy).
ƒ
[0]
Disabled = None (default)
ƒ
[1]
Adding PAsserted Identity
ƒ
[2]
Adding PPreferred Identity
The Asserted ID mode defines the header (P-Asserted-Identity or P-
Preferred-Identity) that is used in the generated INVITE request. The
header also depends on the calling Privacy (allowed or restricted).
The P-Asserted-Identity (or P-Preferred-Identity) headers are used to
present the originating party's Caller ID. The Caller ID is composed of a
Calling Number and (optionally) a Calling Name.
P-Asserted-Identity (or P-Preferred-Identity) headers are used together
with the Privacy header. If Caller ID is restricted (P-Asserted-Identity is not
sent), the Privacy header includes the value 'id' ('Privacy: id'). Otherwise,
for allowed Caller ID, 'Privacy: none' is used. If Caller ID is restricted
(received from PSTN), the From header is set to
<anonymous@anonymous.invalid>.
The logic for filling the calling party parameters is as follows: the SIP
header is selected first from which the calling party parameters are