AudioCodes Mediant 2000 User Manual page 94

ini File Field Name
Web Parameter Name
Play Ringback Tone to Trunk
[PlayRBTone2Trunk_ID]
SIP User's Manual
Valid Range and Description
[0] Default = Uses default behavior for each trunk (see note
below).
[1] Service = Sends ISDN In or Out of Service (only for ISDN
protocols that support Service message).
[2] D-Channel = Takes D-Channel down or up (ISDN only).
[3] Alarm = Sends or cleans PSTN AIS Alarm (ISDN and CAS).
[4] Block = Blocks trunk (CAS only).
Notes:
The default behavior (value 0) is as follows:
- ISDN: Use Service messages on supporting variants and use
Alarm on non-supporting variants.
- CAS: Use Alarm.
When updating this parameter value at run-time, you must stop
the trunk and then restart it for the update to take effect.
To determine the method for setting Out-Of-Service state for all
trunks (i.e., per device), use the DigitalOOSBehavior parameter
(refer to ''Configuring the Digital Gateway Parameters'' on page
207).
The ID in the ini file parameter name represents the trunk
number, where 0 is the first trunk.
Determines the method for playing a ringback tone (RBT) to the
Trunk side. In the ini file parameter, ID depicts the Trunk number,
where 0 is the first trunk.
[-1] = Not configured - use the value of the parameter
PlayRBTone2Tel.
[0] Don't Play = The device configured with ISDN / CAS protocol
type, doesn't play an RBT. No PI is sent to the ISDN unless the
parameter ProgressIndicator2ISDN_ID is configured differently.
[1] Play on Local = The device configured with CAS protocol
type, plays a local RBT to PSTN upon receipt of a 180 Ringing
response (with or without SDP). Note: Receipt of a 183 response
doesn't cause the device configured with CAS to play an RBT
(unless SIP183Behaviour = 1).
The device configured with ISDN protocol type operates
according to the parameter LocalISDNRBSource:
1) If the device receives a 180 Ringing response (with or without
SDP) and LocalISDNRBSource = 1, it plays an RBT and sends
an Alert with PI = 8 (unless the parameter
ProgressIndicator2ISDN_ID is configured differently).
2) If LocalISDNRBSource = 0, the device doesn't play an RBT
and an Alert message (without PI) is sent to the ISDN. In this
case, the PBX / PSTN should play the RBT to the originating
terminal by itself.
Note: Receipt of a 183 response doesn't cause the device with
ISDN protocol type to play an RBT; the device issues a Progress
message (unless SIP183Behaviour = 1). If SIP183Behaviour = 1,
the 183 response is treated the same way as a 180 Ringing
response.
[2] Prefer IP = Play according to 'Early Media' (default). If a 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
94
Mediant 2000
Document #: LTRT-68808