Prerequisites

Access to Kerio Operator Webadmin.

Process

Please follow the steps below to specify a non-standard port for SIP configuration.

Log in to Kerio Operator Configuration console as Admin user.
Navigate to Configuration > Call Routing and double-click on the SIP Interface you want to edit.
Open SIP Details tab and configure the following fields according to your needs using the following syntax: X.X.X.X:PORT ( where X.X.X.X is the IP address of the SIP server and PORT is the non-standard port).
- Inbound Proxy
- Outbound Proxy
- SIP Registrar

The SIP registration should be successful.