Cisco Router is mapping external port 0 to 3 of my devices.

Unanswered Question
Oct 15th, 2009

What's happening is that, i have a cisco 1801 with about 5 Vlans, im having problems on my voip vlan, like, 2, 3 days ago, 3 of my phones(2Cisco, 1 Grandstream) started having issues, i can make and receive calls, but i cant hear anything, neither can the other party. Strangely, 3 other phones work, they are all linksys, or connected to a linksys voip adapter.

I already know whats causing this, i just dont know how to solve it, maybe some of you have any ideia about this, before i try another IOS version.

Heres some info(if you need more just tell me):

nat table -

udp myexternalip:0 myinternalip:28964 213.13.89.67:41290 213.13.89.67:41290

IOS version - c180x-advipservicesk9-mz.124-6.T6.bin

Cheers

I have this problem too.
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miraportuga Thu, 10/15/2009 - 12:49

Ok, the things i've done so far:

Cleaned the NAT table, took access-lists off the vlan and dialer interface, also took off the inspect from the dialer interface.

Cheers

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