AudioCodes Mediant 600 User Manual page 452

Mediant 600 & Mediant 1000
For example:
Invite sip:trans123@audiocodes.com SIP/2.0
The left part of the SIP URI includes the transcoding ID ('the default string is 'trans') and is
terminated by a unique number (123). The device immediately sends a 200 OK message in
response to each INVITE.
Each of the transcoding SIP call participants can use a different VoIP coder and a different
DTMF transport type, negotiated with the device using common SIP negotiation.
Sending a BYE request to the device by any of the participants, terminates the SIP session
and removes it from the Transcoding session. The second BYE from the second participant
ends the transcoding session and releases its resources.
The device uses two media (DSP) channels for each call, thereby reducing the number of
available transcoding sessions to half of the defined value for MediaChannels. To limit the
number of resources for transcoding, use the 'Number of Media Channels' parameter
(MediaChannels), located in the IP Media Settings page (Configuration tab > VoIP menu
> IP Media > IP Media Settings). For example, if 'Number of Media Channels' is set to
"40", only 20 transcoding sessions are available.
The figure below illustrates an example of a direct connection to a device:
Figure 32-1: Direct Connection (Example)
The figure below illustrates an example of implementing an Application server:
User's Manual 452 Document #: LTRT-83313