AudioCodes Mediant 500L User Manual page 445

User's Manual
Parameter
Remote Can Play Ringback
sbc-rmt-can-play-ringback
[IpProfile_SBCRemoteCanPl
ayRingback]
Generate RTP
sbc-generate-rtp
[IPProfile_SBCGenerateRTP
]
SBC Media
Allowed Audio Coders
allowed-audio-coders-group-
name
[IpProfile_SBCAllowedAudio
CodersGroupName]
Allowed Coders Mode
sbc-allowed-coders-mode
[IpProfile_SBCAllowedCoder
sMode]
Version 7.2
remote UA support, see Interworking SIP Early Media on page
660.

[1] Supported = UA is capable of receiving 18x messages with
delayed RTP.
Defines whether the destination UA can play a local ringback tone.

[0] No = UA does not support local ringback tone. The device
sends 18x with delayed SDP to the UA.

[1] Yes = (Default) UA supports local ringback tone. For the
device's handling of this remote UA support, see Interworking SIP
Early Media on page 660.
Enables the device to generate "silence" RTP packets to the SIP
entity until it detects audio RTP packets from the SIP entity. The
parameter provides support for interworking with SIP entities that wait
for the first incoming packets before sending RTP (e.g., early media
used for ringback tone or IVR) during media negotiation.

[0] None (Default) = Silence packets are not generated.

[1] Until RTP Detected = The device generates silence RTP
packets to the SIP entity upon receipt of a SIP response (183 with
SDP) from the SIP entity. In other words, these packets serve as
the first incoming packets for the SIP entity. The device stops
sending silence packets when it receives RTP packets from the
peer side (which it then forwards to the SIP entity).
Note: To generate silence packets, DSP resources are required
(except for calls using the G.711 coder).
Assigns an Allowed Audio Coders Group, which defines audio (voice)
coders that can be used for the SIP entity associated with the IP
Profile.
To configure Allowed Audio Coders Groups, see Configuring Allowed
Audio Coder Groups on page 434. For a description of the Allowed
Coders feature, see ''Restricting Coders'' on page 652.
Defines the mode of the Allowed Coders feature for the SIP entity
associated with the IP Profile.

[0] Restriction = In the incoming SDP offer, the device uses only
Allowed coders; the rest are removed from the SDP offer (i.e., only
coders common between those in the received SDP offer and the
Allowed coders are used).

[1] Preference = The device re-arranges the priority (order) of the
coders in the incoming SDP offer according to their order of
appearance in the Allowed Audio Coders Group or Allowed Video
Coders Group. The coders in the original SDP offer are listed after
the Allowed coders.

[2] Restriction and Preference = Performs both Restriction and
Preference.
Note:

The parameter is applicable only if Allowed coders are assigned to
the IP Profile (see the 'Allowed Audio Coders' or 'Allowed Video
Coders' parameters).

For more information on the Allowed Coders feature, see
445
20. Coders and Profiles
Description
Mediant 500L Gateway & E-SBC