Hello:
I have a version 2 BEFSR41 cable/dsl router. I want to use a Cisco ATA186 behind this box. I have the ATA setup and the SIP proxy I want to register with even sees register attempts however the register is not successful nor can I make calls.
I tried setting up a dmz host for the ATA but that didn't help. Any suggestions on what type of filter I need in the ATA box to make this work?
Thanks
Turn off DMZ.
Find the port forwarding page
Forward
5060 TCP/UDP to the ip of your ATA Also forward a range of RTP ports to the same ip. (see the ATA config web page I think it says "1024-65535, default 5004")Sometimes it's easier to set a fixed ip for the ATA or SIP phone.
I think port forwarding should help you. Look at "sip port forward linksys" on Google for more info.
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