AudioCodes MP-124 - Page 432

SIP User's Manual 432 Document #: LTRT-65412
MP-11x & MP-124
The device supports the following conference modes (configured by the parameter
3WayConferenceMode):
 Local, on-board conferencing, whereby the conference is established on the device
without the need for an external Conference server. This feature includes local mixing
and transcoding of the 3-Way Call legs on the device, and even allowing multi-codec
conference calls. The device utilizes resources from idle ports to establish the
conference call. The number of simultaneous on-board conferences can be limited
using the parameter MaxInBoardConferenceCalls. In addition, you can designate ports
that can’t be used as a resource for conference calls initiated by other ports, using the
parameter 3WayConfNoneAllocateablePorts. Ports that are not configured with this
parameter (and that are idle) are used by the device as a resource for establishing
these type of conference calls. For this mode, the parameter 3WayConferenceMode is
set to 2.
 Conferencing controlled by an external AudioCodes Conference (media) server:
The Conference-initiating INVITE sent by the device uses the ConferenceID
concatenated with a unique identifier as the Request-URI. This same Request-URI is
set as the Refer-To header value in the REFER messages that are sent to the two
remote parties. For this mode, the parameter 3WayConferenceMode is set to 0
(default.)
 Conferencing controlled by an external, third-party Conference (media) server:
The Conference-initiating INVITE sent by the device uses only the ConferenceID as
the Request-URI. The Conference server sets the Contact header of the 200 OK
response to the actual unique identifier (Conference URI) to be used by the
participants. This Conference URI is included (by the device) in the Refer-To header
value in the REFER messages sent by the device to the remote parties. The remote
parties join the conference by sending INVITE messages to the Conference server
using this conference URI. For this mode, the parameter 3WayConferenceMode is set
to 1.
To enable three-way conferencing, the following parameters need to be configured:
 Enable3WayConference
 ConferenceCode = '!' (default, which is the hook flash button)
 HookFlashCode
 3WayConferenceMode (conference mode)
 MaxInBoardConferenceCalls (if on-board conferencing)
 3WayConfNoneAllocateablePorts (if on-board conferencing)