AudioCodes Mediant 800B MSBR User Manual page 323

User's Manual
Parameter
Web: Play RB Tone to IP
CLI: play-rbt-to-ip
[IpProfile_PlayRBTone2IP]
Web: Early Media
CLI: early-media
[IpProfile_EnableEarlyMedia]
Version 6.8
(VxxModemTransportType is set to 2) for all
modems.

Set the NSEPayloadType parameter to 100.

The corresponding global parameter is NSEMode.
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.
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.

Analog: The device sends a SIP 183 Session
Progress response with SDP instead of a 180
Ringing, 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 sent only if PI is set to 1 or 8 in the received
Proceeding, Alerting, or Progress PRI messages. See
also the ProgressIndicator2IP parameter, which if set
to 1 or 8, the device behaves as if it received the ISDN
323
23. Coders and Profiles
Description
Mediant 800B MSBR