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Firewall ADSL Modem / Router Series

 

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  With V4.23 firmware or later, how to receive VoIP phone (SIP) call?
 

For SIP phone call out, there is no need to configure the virtual server. But for receiving SIP phone call, we need to add UDP port, 5060, 5062, and 5064... in the virtual server. Normally, it should be 5060 if you have one SIP phone only.
 

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