AudioCodes Mediant 500 E-SBC, User Manual

Page: 312 / 920

User's Manual 312 Document #: LTRT-10437
Mediant 500 E-SBC
Parameter Description
The SDP contains the following line:
'a=rtpmap:100 X-NSE/8000'.
Notes:

When enabled, the following conditions must also be met:

The Cisco gateway must include the following
definition:
'modem passthrough nse payload-type 100 codec
g711alaw'.

Set the Modem transport type to Bypass mode
(VxxModemTransportType is set to 2) for all
modems.

Set the NSEPayloadType parameter to 100.

The corresponding global parameter is NSEMode.
Web: Play RB Tone to IP
CLI: play-rbt-to-ip
[IpProfile_PlayRBTone2IP] Enables the device to play a ringback tone to the IP side for
IP-to-Tel calls.

[0] Disable (Default)

[1] Enable = Plays a ringback tone after a SIP 183
session progress response is sent.
Notes:

To enable the device to send a 183/180+SDP responses,
set the EnableEarlyMedia parameter to 1.

If the EnableDigitDelivery parameter is set to 1, the
device doesn't play a ringback tone to IP and doesn't
send 183 or 180+SDP responses.

Digital interfaces: If this parameter is enabled and
EnableEarlyMedia is set to 1, the device plays a ringback
tone according to the following:

CAS: The device opens a voice channel, sends a
183+SDP response, and then plays a ringback tone
to IP.

ISDN: If a Progress or an Alerting message with PI (1
or 8) is received from the ISDN, the device opens a
voice channel, sends a 183+SDP or 180+SDP
response, but doesn't play a ringback tone to IP. If PI
(1 or 8) is received from the ISDN, the device
assumes that ringback tone is played by the ISDN
switch; otherwise, the device plays a ringback tone to
IP after receiving an Alerting message from the
ISDN. It sends a 180+SDP response, signaling to the
calling party to open a voice channel to hear the
played ringback tone.

The corresponding global parameter is PlayRBTone2IP.
Web: Early Media
CLI: early-media
[IpProfile_EnableEarlyMedia] Enables the Early Media feature for sending media (e.g.,
ringing) before the call is established.

[0] Disable (default)

[1] Enable

Digital: The device sends a SIP 18x response with
SDP, allowing the media stream to be established
before the call is answered.
Notes:

Digital: The inclusion of the SDP in the 18x response
depends on the ISDN Progress Indicator (PI). The SDP is