AudioCodes Mediant 1000 User Manual page 80

Parameter
Play Ringback Tone to IP
[PlayRBTone2IP]
Play Ringback Tone to
Tel
[PlayRBTone2Tel]
Use Tgrp Information
[UseSIPTgrp]
SIP User's Manual
Table 5-8: General Parameters (Protocol Definition)
[0] Don't Play = Ringback tone isn't played to the IP side of the call
(default).
[1] Play = Ringback tone is played to the IP side of the call after SIP
183 session progress response is sent (for analog interfaces, this
applies only to FXS modules; in FXO modules the Ringback tone isn't
played).
For digital modules: If configured to 1 ('Play'), and if EnableEarlyMedia = 1,
for IP-to-Tel calls the gateway may play a ringback tone to IP, according to
the following:
For CAS interfaces, the gateway opens a voice channel, sends a
183+SDP response and plays a Ringback tone to IP.
For ISDN interfaces, if a Progress or an Alert message with PI (1 or 8)
is received from the ISDN, the gateway opens a voice channel, sends a
183+SDP or 180+SDP response, but it doesn't play a Ringback tone to
IP. If PI (1 or 8) is received from the ISDN, the gateway assumes that
Ringback tone is played by the ISDN Switch. Otherwise, the fateway
plays a Ringback tone to IP after receiving an Alert message from the
ISDN. It sends a 180+SDP response, signaling to the originating party
to open a voice channel to hear the played Ringback tone.
Notes:
To enable the gateway to send a 183/180+SDP responses, set
EnableEarlyMedia to 1.
If EnableDigitDelivery = 1, the gateway doesn't play a Ringback tone to
IP and doesn't send 183 or 180+SDP responses.
Determines the method used to play Ringback tone to the Tel side. [0]
Don't Play = Ringback Tone isn't played.
[1] Play Local = Ringback Tone is played to the Tel side of the call
when 180/183 response is received.
[2] Play According to Early Media = 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).
[0] Disable = Tgrp parameter isn't used (default).
[1] Send Only = The trunk group number is added as the 'tgrp'
parameter to the Contact header of outgoing SIP messages. If a trunk
group number is not associated with the call, the 'tgrp' parameter isn't
included. If a 'tgrp' value is specified in incoming messages, it is
ignored.
[2] Send and Receive = The functionality of outgoing SIP messages is
identical to the functionality described in option (1). In addition, for
incoming SIP messages, if the Request-URI includes a 'tgrp'
parameter, the gateway routes the call according to that value (if
possible). If the Contact header includes a 'tgrp' parameter, it is copied
to the corresponding outgoing messages in that dialog.
Description
80
Mediant 1000
Document #: LTRT-83302