If you want to change OfficeRoute SIP proxy port from default 5060, please follow steps below.
First of all go to section Administration -> Main configuration and in parameter SIP proxy port specify a port which you want to use (in example below 5062).
Then go to Telephony services -> Devices -> SIP lines and edit the internal SIP line. Here fill ":port_number" to parameter SIP server address.
Now is everything ready and you can register your IP station on port 5062 instead of 5060.
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