Version 6.4 597 March 2012
SIP User's Manual A. Configuration Parameters Reference
Parameter Description
device did not send a 183 with an SDP and it receives an Alert
without PI, the device sends a 180 (without SDP). If it receives an
Alert with PI it sends a 183with an SDP.
When disabled, the device sends additional 18x responses as a result
of receiving Alerting and Progress messages, regardless of whether
or not a 18x response was already sent.
Note: This parameter is applicable only if the EnableEarlyMedia
parameter is set to 1 (i.e., enabled).
Web: 183 Message Behavior
EMS: SIP 183 Behaviour
[SIP183Behaviour]
Digital interfaces: Defines the ISDN message that is sent when the
183 Session Progress message is received for IP-to-Tel calls. Analog
interfaces: Defines the response of the device upon receipt of a SIP
183 response.
[0] Progress = Digital interfaces: The device sends a Progress
message. Analog interfaces: A 183 response (without SDP) does
not cause the device to play a ringback tone (default).
[1] Alert = Digital interfaces: The device sends an Alerting
message (upon receipt of a 183 response) instead of an ISDN
Progress message. Analog interfaces: 183 response is handled by
the device as if a 180 Ringing response is received, and the
device plays a ringback tone.
[ReleaseIP2ISDNCallOnPro
gressWithCause]
Typically, if an Q.931 Progress message with a Cause is received
from the PSTN for an outgoing IP-to-ISDN call and the
EnableEarlyMedia parameter is set to 1 (i.e., the Early Media feature
is enabled), the device interworks the Progress to 183+sdp to enable
the originating party to hear the PSTN announcement about the call
failure. Conversely, if EnableEarlyMedia is set to 0, the device
disconnects the call by sending a SIP 4xx response to the originating
party.
However, if the ReleaseIP2ISDNCallOnProgressWithCause
parameter is set to 1, the device sends a SIP 4xx response even if
the EnableEarlyMedia parameter is set to 1.
[0] = If a Progress with Cause message is r
for an outgoing IP-to-
ISDN call, the device does not disconnect the
call by sending a SIP 4xx response to the originating party
(default).
[1] = The device sends a SIP 4xx response when the
EnableEarlyMedia parameter is set to 0.
[2] = The device always sends a SIP 4xx response, even if he
EnableEarlyMedia parameter is set to 1.
Web: Session-Expires Time
EMS: Sip Session Expires
[SIPSessionExpires]
Defines the numerical value 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).
Web: Minimum Session-
Expires
EMS: Minimal Session
Refresh Value
[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.
Web/EMS: Session Expires
Method
[SessionExpiresMethod]
Determines the SIP method used for session-timer updates.
[0] Re-INVITE = Uses Re-INVITE messages for session-timer
updates (default).
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