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Voice problems over VPN

Hi All,

I'm having issues between two sites that are connected to eachother. I'm using Cisco's 887 VA and the phones are DT700s that are conected to a NEC SV8100 system. The VPN seems to work perfectly fine because I can ping every device from one site to another and also the other way arround. However I'm getting one way RTP flows.

Site A -> 192.168.1.0/24
Site B -> 192.168.2.0/24

In site A the NEC SV8100 needs NAT so it can be acessible by the SIP trunks.

The problem seems to be that no matter if it is Site A calling SIte B or SIte B calling SIte A, Site B does not ear Site A.

I am wondering if I got something wrong on my configuration on any of the Cisco's???
Can you guys see something wrong on the config?

(Configs are attached as image files)

  • VPN
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