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Cisco 7960 SIP, NAT and public VoIP provides

Hi,

I'm having problem with getting C7960 to work behind NAT. I've got 8.4(0) software and NAT configured on C1600 router with IOS 12.3(20).

I've nat_enable: 1 and other nat connected options enabled on the phone, nat address is set to outside address. I've three SIP operators configured, I got two of them registered on its proxies. I could place and receive calls, but with no voice. I've tried different codecs and even Linksys WRT54G router instead of C1600. No effect.

Voice gateways from Linksys works perfectly behind that NAT. I've made ip nat inside source static entries for every required port.

TIA.

Tomek

1 REPLY
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Re: Cisco 7960 SIP, NAT and public VoIP provides

I think you need to check the access list if the ports are not blocked.

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