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Note if the proxy[x].address is set to “localhost”, the W25 will not register to
any SIP server.
To display the entries in the call server, use the following command
cf show ims.callserver
ims.callserver[0].domain "server.com"
.proxy[0].address "host.server.com"
.port 5060
.outbound_proxy ""
.local_ip_interface "ppp0"
The domain parameter is for future use. The proxy[x].port is by default 5060
(according to the SIP standard). The port number only needs to be
changed in special case.
In a normal scenario the SIP server is accessible via the WAN interface,
but for test and demo purposes it’s possible to use a SIP server which is
connected on the LAN interface. To change this you need to modify
“local_ip_interface” from “ppp0” (WAN) to “br0” (LAN).
4.1.3 IMS Media Codec
The IMS Media Codec commands configure the settings for T.38.
4.1.3.1 T.38 Settings
The settings for T.38 are used for Fax. The following parameters can be
configured:
Table 1 T.38 configuration parameters
Parameter Description
forward_error_
correction
Specifies if FEC (Forward Error Detection) should
be used or otherwise Redundancy packets will be
used. (True|False)
max_bit_rate
The max bit rate for fax transmission. Valid values
are 2400, 4800, 7200, 9600, 12000 and 14400.
local_tcf
Defines whether the tcf (Training Check Flag)
should be local i.e. only between the fax machine
and the W25 T.30-client or end to end (to the
terminating fax machine). If using UDP (default)
this parameter should be set to false. (True|False)
fill_bit_
removal
Capability to remove and insert fill bits in Phase C,
non-ECM data to reduce bandwidth in the packet
network. (True|False)
transcoding_mmr
Specifies whether the ability to convert to/from
MMR from/to the line format for increasing the
compression of the data and saving bandwidth in
the packet network. (True|False)
transcoding_
Specifies whether the ability to convert to/from
12 2/221 02-FGB 101 327 Uen B – November 2007