Gigaset Pro cord-connected VoIP-telephone S30853-H4001-R101 Manuel D’Utilisation

Maxwell 10 / en / A31008-N4001-R102-1-20 / web_configurator.fm / 22.01.2014

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3.04.2012

On this screen you configure the ports for establishing VoIP connections.

Settings     Network and Connections     VoIP Settings

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Select Yes if the phone should use any available ports for the SIP port and RTP port instead of fixed 
ports. 
The use of random ports is advisable if you want multiple phones to be operated on the same 
router/gateway with NAT. The phones must then use different ports so that the NAT for the router/
gateway is only able to forward incoming calls and voice data to one (the intended) phone. 

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If you click on No, the phone uses the ports specified in SIP port and RTP port.

Specify the local communication port that the phone should use to send and receive signalling 
data. Specify a number between 1024 and 49152. The default port number for SIP signalling is 
5060.

Specify the local communication port that the phone should use to receive voice data. Enter an 
even number between 1024 and 49152. The port number must not be the same as the port num-
ber in the SIP port field. If you enter an odd number, the next lowest even number will be selected 
automatically (e.g., if you enter 5003, then 5002 is set automatically). The default port number for 
voice transmission is 5004.

Choose whether or not to use ICE (Interactive Connectivity Establishment). ICE is similar to STUN 
(  

) a Session Initiation Protocol (SIP) method for overcoming NAT firewalls. 

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Click on Save to save your settings on the VoIP Settings screen.

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Select the ports on which your phone 
expects incoming VoIP connections.