AudioCodes Mediant 800B User Manual page 986

Parameter
Web: Play Ringback Tone to
Tel
EMS: Play Ring Back Tone To
Tel
CLI: play-rbt2tel
[PlayRBTone2Tel]
User's Manual
If the SIP release reason received from the IP side is mapped to
the Q.931 release code specified by the parameter, the device
plays the user-defined tone. Otherwise, if not specified and the
release code is 17 (User Busy), the device plays the busy tone and
for all other release codes, the device plays the reorder tone.
Notes:

The parameter is applicable only to digital PSTN interfaces.

To enable the feature, the 'Play Busy Tone to Tel'
(PlayBusyTone2ISDN) parameter must be enabled (set to 1 or
2).
Determines the playing method of the ringback tone to the Tel (for
analog interfaces) or Trunk (for digital interfaces) side. For digital
interfaces: This parameter applies to all trunks that are not
configured by the PlayRBTone2Trunk parameter (which defines
ringback tone per Trunk).

[0] Don't Play =

Analog Interfaces: Ringback tone is not played.

Digital Interfaces: The device configured for ISDN / CAS
doesn't play a ringback tone. No PI is sent to the ISDN
unless the ProgressIndicator2ISDN_x parameter is
configured differently.

[1] Play on Local =

Analog Interfaces: Plays a ringback tone to the Tel side of
the call when a SIP 180/183 response is received.

Digital Interfaces: The device configured for CAS 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 183 response does not cause the device
configured for CAS to play a ringback tone (unless the
SIP183Behaviour parameter is set to 1). The device
configured for ISDN operates according to the
LocalISDNRBSource parameter:
1) If the device receives a 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).
2) 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
configured for ISDN to play a ringback tone; the device
issues 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 = (Default):

Analog Interfaces: Plays a ringback tone to the Tel side only
if a 180/183 response without SDP is received. If 180/183
with SDP message is received, the device cuts through the
voice channel and doesn't play the ringback tone.

Digital Interfaces: 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
986
Mediant 800B Gateway and E-SBC
Description
Document #: LTRT-10620