AudioCodes E-SBC User Manual

CHAPTER68 Configuration Parameters Reference
Mediant 1000 Gateway & E-SBC | User's Manual
Parameter Description
■ [0] = (Default) Disable. If the device sends a 183 response
with SDP (due to a received ISDN Progress or Proceeding
with PI messages, i.e., a ring tone, busy tone or recorded
announcement played to the ISDN side) and an Alerting
message is then received from the ISDN side (with or without
Progress Indicator), the device also sends a 180 Ringing
response to the caller. Therefore, in this case, early media is
played to the ISDN side and then the ringback tone is played
by the IP PBX.
■ [1] = Enable. If the device sends a 183 response with SDP
(due to a received ISDN Progress or Proceeding with PI
messages) and an Alerting message is then received from
the ISDN side (with or without Progress Indicator), the device
does not send a 180 Ringing response to the caller and the
voice channel remains open. Therefore, in this case, early
media is played to the ISDN side and a ringback tone is not
played by the IP PBX.
Note:
■ The parameter is applicable only to digital interfaces.
■ The parameter is applicable only if the EnableEarlyMedia
parameter is set to 1 (i.e., enabled).
'183 Message Behavior'
configure voip >
sip-definition
settings > 183-msg-
behavior
[SIP183Behaviour]
Digital: Defines the ISDN message that is sent when the 183
Session Progress message is received for IP-to-Tel calls.
Analog: Defines the response of the device upon receipt of a SIP
183 response.
■ [0] Progress = (Default)
✔ Digital: The device sends a Progress message.
✔ Analog: A 183 response (without SDP) does not cause
the device to play a ringback tone.
■ [1] Alert =
✔ Digital: The device sends an Alerting message (upon
receipt of a 183 response) instead of an ISDN Progress
message.
✔ Analog: 183 response is handled by the device as if a 180
Ringing response is received, and the device plays a
ringback tone.
Note: The parameter is applicable only to the Gateway
application.
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AudioCodes E-SBC Specifications

General

Brand	AudioCodes
Model	E-SBC
Category	Gateway
Language	English