User`s manual

MediaPack
SIP User's Manual 64 Document #: LTRT-65408
Table 5-3: Protocol Definition, General Parameters (continues on pages 58 to 64)
Parameter Description
Enable Semi-Attended
Transfer
[EnableSemiAttendedTran
sfer]
Determines the gateway behavior when Transfer is initiated while still in Alerting
state.
Valid options include:
Disable [0] = Send REFER with Replaces (default).
Enable [1] = Send CANCEL, and after a 487 response is received, send REFER
without Replaces.
3xx Behavior
[3xxBehavior]
Determines the gateway’s behavior when a 3xx response is received for an
outgoing INVITE request. The gateway can either use the same call identifiers
(CallID, branch, to and from tags) or change them in the new initiated INVITE.
0 (forward) = Use different call identifiers for a redirected INVITE message
(default).
1 (redirect) = Use the same call identifiers.
Multiple Packetization Time
Format
[MultiPtimeFormat]
Determines whether the 'mptime' attribute is included in the outgoing SDP.
Valid options include:
0 = Disable (default)
1 = Enable (includes the mptime attribute in the outgoing SDP -- PacketCable
defined format)
The 'mptime' attribute enables the IP gateway to define a separate Packetization
period for each negotiated coder in the SDP. The 'mptime' attribute is only
included if this parameter is enabled, even if the remote side includes it in the SDP
offer. Upon reception, each coder receives its 'ptime' value in the following
precedence:
 From 'mptime' attribute
 From 'ptime' attribute
 Default value
Retransmission Parameters
SIP T1 Retransmission
Timer [msec]
[SipT1Rtx]
The time interval (in msec) between the first transmission of a SIP message and
the first retransmission of the same message.
The default is 500.
Note: The time interval between subsequent retransmissions of the same SIP
message starts with SipT1Rtx and is multiplied by two until SipT2Rtx.
For example (assuming that SipT1Rtx = 500 and SipT2Rtx = 4000):
The first retransmission is sent after 500 msec.
The second retransmission is sent after 1000 (2*500) msec.
The third retransmission is sent after 2000 (2*1000) msec.
The fourth retransmission and subsequent retransmissions until SIPMaxRtx are
sent after 4000 (2*2000) msec.
SIP T2 Retransmission
Timer [msec]
[SipT2Rtx]
The maximum interval (in msec) between retransmissions of SIP messages.
The default is 4000.
Note: The time interval between subsequent retransmissions of the same SIP
message starts with SipT1Rtx and is multiplied by two until SipT2Rtx.
SIP Maximum Rtx
[SIPMaxRtx]
Number of UDP transmissions (first transmission + retransmissions) of SIP
messages.
The range is 1 to 7.
The default value is 7.
EnableReasonHeader
[Enable Reason Header]
Enables / disables the usage of the SIP Reason header.
0 = Disable.
1 = Enable (default).