AudioCodes Mediant 800B User Manual page 925

User's Manual
Parameter
Web: Play Ringback Tone to
Tel
EMS: Play Ring Back Tone To
Tel
CLI: play-rbt2tel
[PlayRBTone2Tel]
Version 6.8
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
an SDP in the current 180 response), the device configured
for ISDN / CAS doesn't play the ringback tone; PI = 8 is
925
56. Configuration Parameters Reference
Description
Mediant 800B Gateway and E-SBC