Version 5.2 75 September 2007
SIP User's Manual 5. Web-based Management
Table 5-8: General Parameters (Protocol Definition)
Parameter Description
183 Message Behavior
[SIP183Behavior]
Defines the ISDN message that is sent when 183 Session
Progress message is received for IP-to-Tel calls.
Valid options include:
 [0] Progress = Progress message (default).
 [1] Alert = Alert message.
When set to 1, the gateway sends an Alert message (after
the receipt of a 183 response) instead of an ISDN Progress
message.
Session-Expires Time
[SIPSessionExpires]
Determines the timeout (in seconds) for keeping a Re-INVITE
message alive within a SIP session. The SIP session is
refreshed each time this timer expires. The SIP method used
for session-timer updates is determined according to the
parameter SessionExpiresMethod.
The valid range is 1 to 86400 sec. The default is 0 (i.e., not
activated).
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 supports for session refresh.
The valid range is 10 to 100000. The default value is 90.
Session Expires Method
[SessionExpiresMethod]
Defines the SIP method used for session-timer updates.
Valid options include:
 [0] Re-Invite = Use Re-INVITE messages for session-
timer updates (default).
 [1] Update = Use UPDATE messages.
Notes:
 The gateway can receive session-timer refreshes using
both methods.
 The UPDATE message used for session-timer purposes is
excluded from the SDP body.
Asserted Identity Mode
[AssertedIdMode]
 [0] Disabled = None (default)
 [1] Adding PAsserted Identity
 [2] Adding PPreferred Identity
The Asserted ID mode defines the header that is used in the
generated INVITE request. The header also depends on the
calling Privacy: allowed or restricted.
The P-asserted (or P-preferred) 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 (or P-preferred) headers are used together with
the Privacy header. If Caller ID is restricted, the 'Privacy: id' is
included. Otherwise for allowed Caller ID, the 'Privacy: none'
is used. If Caller ID is restricted (received from PSTN), the
From header is set to <anonymous@anonymous.invalid>.
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