AudioCodes E-SBC

CHAPTER19 Coders and Profiles
Mediant 1000 Gateway & E-SBC | User's Manual
Parameter Description
■ Digital: You can also configure early SIP 183 response
immediately upon the receipt of an INVITE, using the
EnableEarly183 parameter.
■ Analog: To send a 183 response, you must also set the
ProgressIndicator2IP parameter to 1. If set to 0, a 180
Ringing response is sent.
■ The corresponding global parameter is
EnableEarlyMedia.
'Progress Indicator to IP'
prog-ind-to-ip
[TelProfile_
ProgressIndicator2IP]
Defines the progress indicator (PI) sent to the IP.
■ [-1] = (Default) Not configured:
✔ Analog: Default values are used (1 for FXO
interfaces and 0 for FXS interfaces).
✔ Digital ISDN: The PI received in ISDN Proceeding,
Progress, and Alerting messages is used, as
described in the options below.
■ [0] No PI =
✔ Analog: For IP-to-Tel calls, the device sends a 180
Ringing response to IP after placing a call to a
phone (FXS) or PBX (FXO).
✔ Digital: For IP-to-Tel calls, the device sends 180
Ringing response to the IP after receiving an ISDN
Alerting, or for CAS after placing a call to the
PBX/PSTN.
■ [1] PI = 1 =
✔ Analog: For IP-to-Tel calls, if the EnableEarlyMedia
parameter is set to 1, the device sends a 183
Session Progress message with SDP immediately
after a call is placed to a phone/PBX. This is used
to cut-through the voice path before the remote
party answers the call. This allows the originating
party to listen to network call progress tones such
as ringback tone or other network announcements.
✔ Digital: For IP-to-Tel calls, if the parameter
EnableEarlyMedia is set to 1, the device sends 180
Ringing with SDP in response to an ISDN Alerting
or it sends a 183 Session Progress message with
SDP in response to only the first received ISDN
Proceeding or Progress message after a call is
placed to PBX/PSTN over the trunk.
■ [8] PI = 8 = Same as PI = 1.
Note: The corresponding global parameter is
ProgressIndicator2IP.
Echo Canceler
'Echo Canceler'
echo-canceller
[TelProfile_EnableEC]
Enables the device's Echo Cancellation feature (i.e., echo
from voice calls is removed).
■ [0] Disable
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