AudioCodes MP-100 User Manual

MP-1xx SIP User’s Manual 5. Configuring the MP-1xx
Version 4.4 47 March 2005
Table 5-1: Protocol Definition, General Parameters (continues on pages 45 to 47)
Parameter Description
Play Ringback Tone to IP
[PlayRBTone2IP]
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.
Play Ringback Tone to Tel
[PlayRBTone2Tel]
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).
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 retransmissions of SIP messages.
The range is 1 to 7.
The default value is 7.

AudioCodes MP-100 Specifications

General

Brand	AudioCodes
Model	MP-100
Category	Gateway
Language	English