AudioCodes Mediant 500 MSBR, User Manual

Page: 432 / 1248

User's Manual 432 Document #: LTRT-10375
Mediant 500 MSBR
Parameter Description

[1] Enable = By sending the 183 response, the device opens
an RTP channel before receiving the "progress" tone from the
ISDN side. The device sends RTP packets immediately upon
receipt of an ISDN Progress, Alerting with Progress indicator,
or Connect message according to the initial negotiation
without sending the 183 response again, thereby saving
response time and avoiding early media clipping.
Note:

The parameter is applicable only to digital interfaces.

This parameter is applicable only to IP-to-Tel ISDN calls and
applies to all calls.

To enable this feature, set the EnableEarlyMedia parameter
to 1.

When the BChannelNegotiation parameter is set to Preferred
or Any, the EnableEarly183 parameter is ignored and a SIP
183 is not sent upon receipt of an INVITE. In such a case,
you can set the ProgressIndicator2IP parameter to 1 (PI = 1)
for the device to send a SIP 183 upon receipt of an ISDN Call
Proceeding message.

The corresponding global parameter is EnableEarly183.
Early Answer Timeout
early-answer-timeout
[IpProfile_EarlyAnswerTimeout]
Defines the duration (in seconds) that the device waits for an
ISDN Connect message from the called party (Tel side), started
from when it sends a Setup message. If this timer expires, the
call is answered by sending a SIP 200 OK message (to the IP
side).
The valid range is 0 to 2400. The default is 0 (i.e., disabled).
Note:

The parameter is applicable only to digital interfaces.

The corresponding global parameter is EarlyAnswerTimeout.
Profile Preference
ip-preference
[IpProfile_IpPreference]
Defines the priority of the IP Profile, where 20 is the highest
priority and 1 the lowest priority.
Note:

If an IP Profile and a Tel Profile apply to the same call, the
coders and other common parameters of the profile with the
highest preference are applied to the call. If the preference of
the profiles is identical, the Tel Profile parameters are
applied.

If the coder lists of both an IP Profile and a Tel Profile apply
to the same call, only the coders common to both are used.
The order of the coders is determined by the preference.

The parameter is applicable only to the Gateway application.
Coders Group
coders-group
[IpProfile_CodersGroupName]
Assigns a Coder Group, which defines audio coders supported
by the SIP entity associated with the IP Profile.
The default value is the default Coder Group
("AudioCodersGroups_0"). To configure Coder Groups, see
Configuring Coder Groups on page 395.
Play RB Tone to IP
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