Voice over IP (VoIP)
117
Codec interconnection with bandwidth restriction
You can implement bandwidth restriction with additional VoIP profiles using an
extended codec list. The extended codec list contains definitions for codecs which are
used by the usual SIP terminals. The codecs on this list are for usage in VoIP profiles
and are not directly supported by the OpenCom 100 communications system.
You can load the extended list of codecs as a description file in the
Configurator
of
the OpenCom 100 communications system on the
System
:
Components
page. The
extended codec list is also a part of data back-up.
Note
You can obtain the extended codec list as a description file from your local dealer or
from the Aastra sales department. This file should not be edited which is why editing
is not supported.
Create a VoIP profile with extended codec entries with the following steps:
1.
Open the
Telephony
:
Extended: VoIP profile
page in the
Configurator
of the
OpenCom 100 communications system.
2.
Click on the
Codecs
button. On the following page, select the codecs to be offered
for defining a VoIP profile. Use
Apply
to confirm.
The list contains entries with various classes (“audio”, “image”, “text”, or “video”) as
well as specific bandwidth information for many entries. Particularly suitable
entries are indicated as “recommended”.
3.
Click on the
New
button on the
VoIP profile
page. Enter a designation into the
Profile name
input field. Determine the permissible codecs in descending order
in the 10 fields. Configure the desired codecs from the extended codec list in the
uppermost fields. Close the list with a fall-back selection, e.g. with “G.711 A-Law
(audio)” and “DTM (RFC4733) (event)”. Use
Apply
to confirm.
Allocate this VoIP profile to the desired SIP terminal or to the desired SIP tie line.
Please note that any codecs not in the VoIP profile are filtered out by the
OpenCom 100 communications system during codec negotiation.
Summary of Contents for OpenCom 100 series
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Page 256: ...Copyright 2011 www aastra com All rights reserved As of 01 10 2011 Subject to changes...
