AudioCodes MediaPack MP-102 User Manual page 47

MP-1xx SIP User's Manual
Table 5-1: Protocol Definition, General Parameters (continues on pages 45 to 47)
Parameter
Play Ringback Tone to IP
[PlayRBTone2IP]
Play Ringback Tone to Tel
[PlayRBTone2Tel]
Retransmission Parameters
SIP T1 Retransmission Timer
[msec]
[SipT1Rtx]
SIP T2 Retransmission Timer
[msec]
[SipT2Rtx]
SIP Maximum Rtx
[SIPMaxRtx]
Version 4.4
Description
Don't Play [0] = Ringback tone isn't played to the IP side of the call (default).
Play [1] = Ringback tone is played to the IP side of the call after SIP 183
session progress response is sent.
Note 1: To enable the gateway to send a 183 response, set 'EnableEarlyMedia' to 1.
Note 2: If 'EnableDigitDelivery = 1', the gateway doesn't play a Ringback tone to IP and
doesn't send a 183 response.
Don't Play [0] = Ringback Tone isn't played.
Always Play [1] = Ringback Tone is played to the Tel side of the call when 180/183
response is received.
Play According to PI [3] = N/A.
Play According to 180/183 [2] = Ringback Tone is played to the Tel side of the call if no
SDP is received in 180/183 responses. If 180/183 with SDP message is received, the
gateway cuts through the voice channel and doesn't play Ringback tone (default).
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.
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.
Number of UDP retransmissions of SIP messages.
The range is 1 to 7.
The default value is 7.
47
5. Configuring the MP-1xx
March 2005