AudioCodes Mediant 800B MSBR User Manual page 951

Mediant 800B MSBR
Parameter
Web: Play Ringback Tone to
Trunk
CLI: play-rbt-to-trk
[PlayRBTone2Trunk_x]
Version 6.8
responses, it does not resume playing the local ringback tone. Note
that for ISDN trunks, this option is applicable only if the
LocalISDNRBSource parameter is set to 1.
Note: This parameter is applicable to the Gateway and IP-to-IP
applications.
Determines the playing method of the ringback tone to the trunk side,
per trunk.

[-1] Not configured = (Default) The settings of the PlayRBTone2Tel
parameter is used.

[0] Don't Play = When the device is configured for ISDN / CAS, it
doesn't play a ringback tone. No Progress Indicator (PI) is sent to
the ISDN unless the ProgressIndicator2ISDN_x parameter is
configured differently.

[1] Play on Local = When the device is configured for CAS, it plays
a local ringback tone to the PSTN upon receipt of a SIP 180
Ringing response (with or without SDP). Note that the receipt of a
SIP 183 response does not cause the device configured for CAS to
play a ringback tone (unless the SIP183Behaviour parameter is set
to 1).
When the device is configured for ISDN, it operates according to
the LocalISDNRBSource parameter, as follows:

If the device receives a SIP 180 Ringing response (with or
without SDP) and the LocalISDNRBSource parameter is set to
1, it plays a ringback tone and sends an ISDN Alert with PI = 8
(unless the ProgressIndicator2ISDN_x parameter is configured
differently).

If the LocalISDNRBSource parameter is set to 0, the device
doesn't play a ringback tone and an Alert message without PI
is sent to the ISDN. In this case, the PBX / PSTN plays the
ringback tone to the originating terminal. Note that the receipt
of a 183 response does not cause the device to play a
ringback tone; the device sends a Progress message (unless
SIP183Behaviour is set to 1). If the SIP183Behaviour
parameter is set to 1, the 183 response is handled the same
way as a 180 Ringing response.

[2] Prefer IP = Plays according to 'Early Media'. 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 configured for ISDN / CAS
doesn't play the ringback tone; PI = 8 is sent in an ISDN Alert
message (unless the ProgressIndicator2ISDN_x parameter is
configured differently).
If a 180 response is received, but the 'early media' voice channel is
not opened, the device configured for CAS plays a ringback tone to
the PSTN. The device configured for ISDN operates according to
the LocalISDNRBSource parameter:

If LocalISDNRBSource is set to 1, the device plays a ringback
tone and sends an ISDN Alert with PI = 8 to the ISDN (unless
the ProgressIndicator2ISDN_x parameter is configured
differently).

If LocalISDNRBSource is set to 0, the device doesn't play a
ringback tone. No PI is sent in the ISDN Alert message (unless
the ProgressIndicator2ISDN_x parameter is configured
differently). In this case, the PBX / PSTN plays a ringback tone
951
67. Configuration Parameters Reference
Description
Mediant 800B MSBR