Avaya Communication Manager IP DECT, Installation, Administration And Maintenance Manual

Page: 15 / 128

IP signalling and media stream
Issue 1 August 2006 15
To establish a call between two DECT handsets the same IP streams must be established like
in the scenario before, except the IP phone is not involved. The following figure illustrates this
scenario.
A call from one DECT handset to another that resides on the same IP DECT base station will
loop back within the IP DECT base station, if no Media gateway is involved. So the call will not
pass through to the local area network (LAN). Although the voice packets will not impact LAN
traffic, signal packets will.
It is also be possible to direct the media stream to connect directly the IP phone and the IP
DECT base station, as shown in the following figures.
Media Server
Media Gateway
Signalling
Base Station Control
I
f
RTP/RTCP
ADMM
(IP DECT Base Station
in ADMM mode)