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PHONES CHANGING PORTS


Friedom-Tech
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Hi what would cause the system to continuously change the ports of the phones?

 

 

[3] 2008/11/04 09:22:58: Source address for sip:712@xx.xx.xx.xx has changed to udp:xx.xx.xx.xx:50702

[3] 2008/11/04 09:23:06: Source address for sip:715@xx.xx.xx.xx has changed to udp:xx.xx.xx.xx:50703

 

That is usually caused by routers that are not "ready for SIP" - their NAT implementation changes the ports. Or your refresh interval is too short and the router already closes the NAT binding.

 

The result is that intermittently you cannot call the extension.

 

It is a serious problem and you should fix this either by changing the router or by making the interval short enough for these routers.

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  • 2 weeks later...
That is usually caused by routers that are not "ready for SIP" - their NAT implementation changes the ports. Or your refresh interval is too short and the router already closes the NAT binding.

 

The result is that intermittently you cannot call the extension.

 

It is a serious problem and you should fix this either by changing the router or by making the interval short enough for these routers.

 

i am using a linksys RV082 this should work no problem if setup correctly right?

 

can you advise which settings need to be changed?

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