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).
4.1.3IMS Media Codec
The IMS Media Codec commands configure the settings for T.38.
4.1.3.1T.38 Settings
The settings for T.38 are used for Fax. The following parameters can be configured:
Table 1 T.38 configuration parameters
Parameter
forward_error_ correction
Description
Specifies if FEC (Forward Error Detection) should be used or otherwise Redundancy packets will be used. (TrueFalse)
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 |
| terminating fax machine). If using UDP (default) |
| this parameter should be set to false. (TrueFalse) |
fill_bit_ removal
transcoding_mmr
transcoding_
Capability to remove and insert fill bits in Phase C,
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. (TrueFalse)
Specifies whether the ability to convert to/from
12 | 2/221 |
