AudioCodes Mediant 500L - Page 480

User's Manual 480 Document #: LTRT-10532
Mediant 500L Gateway & E-SBC
Parameter Description
parameter, which must be set to any value other than
2.
 See also the IgnoreAlertAfterEarlyMedia parameter. The
parameter allows, for example, to interwork Alert with PI to
SIP 183 with SDP instead of 180 with SDP.
 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
 [1] Line Echo Canceller (default)