One Way Voice

@batchen wrote:

Hello,

we are having physical machine With Centos 6.4 and 2.10.0.0 FreePBX
now,
we have a sip provider with a registerd sip_trunk and it has also a media address.
when i call from this sip trunk to the outside - i can hear the person i called to but he cant hear me
and when an incoming call from this sip trunk goes in
i can hear the outside person and he cant hear me.

when i made rtp sniffing i can see rtp going both ways to correct address
and when our firewall guy checkd he can see rtp both ways go throw.

this machine has 2 network cards
both internal 1 for PRI and another one.

we have set a static external ip on pbx & firewall settings for sip trunks.
now beside this provider we have another provider that all calls go throw fine with RTP

do you have some suggestion to check ?
because we do see RTP packages go throw but there is one way voice.

Thanks.

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