AudioCodes Mediant 600 User Manual page 789

User's Manual
Parameter
Web: Play Ringback Tone to IP
EMS: Play Ring Back Tone To
IP
[PlayRBTone2IP]
Web: Play Local RBT on ISDN
Transfer
EMS: Play RBT On ISDN
Transfer
[PlayRBTOnISDNTransfer]
Version 6.6
message (unless SIP183Behaviour is set to 1). If
SIP183Behaviour is set to 1 (183 is handled the same way
as a 180 with SDP), the device sends an Alert message
with PI = 8 without playing a ringback tone.

[3] Play Local Until Remote Media Arrive = Plays tone
according to received media. The behaviour is similar to option
[2]. If a SIP 180 response is received and the voice channel is
already open (due to a previous 183 early media response or
due to an SDP in the current 180 response), the device plays
a local ringback tone if there are no prior received RTP
packets. The device stops playing the local ringback tone as
soon as it starts receiving RTP packets. At this stage, if the
device receives additional 18x responses, it does not resume
playing the local ringback tone. Note that for ISDN trunks, this
option is applicable only if LocalISDNRBSource is set to 1.
Notes:

This parameter is applicable only to the Gateway (GW)
application (i.e., not the IP-to-IP application).

This parameter is applicable only to digital PSTN interfaces.

The x in the ini file parameter name denotes the trunk number,
where 0 is Trunk 1.
Determines whether the device plays a ringback tone to the IP
side for IP-to-Tel calls.

[0] Don't Play = (Default) Ringback tone isn't played.

[1] Play = Ringback tone is played after SIP 183 session
progress response is sent.
For digital modules: If configured to 1 ('Play') and
EnableEarlyMedia is set to 1, the device plays a ringback tone
according to the following:

For CAS interfaces: the device opens a voice channel, sends
a 183+SDP response, and then plays a ringback tone to IP.

For ISDN interfaces: if a Progress or an Alerting message with
PI (1 or 8) is received from the ISDN, the device opens a voice
channel, sends a 183+SDP or 180+SDP response, but doesn't
play a ringback tone to IP. If PI (1 or 8) is received from the
ISDN, the device assumes that ringback tone is played by the
ISDN switch. Otherwise, the device plays a ringback tone to IP
after receiving an Alerting message from the ISDN. It sends a
180+SDP response, signaling to the calling party to open a
voice channel to hear the played ringback tone.
Notes:

To enable the device to send a 183/180+SDP responses, set
the EnableEarlyMedia parameter to 1.

If the EnableDigitDelivery parameter is set to 1, the device
doesn't play a ringback tone to IP and doesn't send 183 or
180+SDP responses.

This parameter can also be configured in an IP Profile.
Determines whether the device plays a local ringback tone for
ISDN's Two B Channel Transfer (TBCT), Release Line Trunk
(RLT), or Explicit Call Transfer (ECT) call transfers to the
originator when the second leg receives an ISDN Alerting or
Progress message.
789
52. Configuration Parameters Reference
Description
Mediant 600 & Mediant 1000