[Freeswitch-users] Help on Explaination of the configurations parrametters

Albert Nguyen albert_nguyen16 at hotmail.com
Thu May 17 05:50:32 MSD 2012


I am new to FS and trying to setup a SBC using the example 2 in the FS wiki website. The link is http://wiki.freeswitch.org/wiki/SBC_FreeSWITCH_Configuration_Example_2. 

There are parameters in the example that I have to replaces for it to work with my own scenarios. However I have problem understanding the following lines. Is there anyone able to explain what does this mean

  <condition field="${sip_redirect_contact_0}" expression="(((192.168.)|(172.24.)|(10.10.))\d+\.\d+(:\d+)(;dtg=\w+)?)">

The bits I  am not sure is )\d+\.\d+(:\d+)(;dtg=\w+)?). What does this do?

Thanks in advance.

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