[Users] One way voice problem with SIP client + openser + pstn gw without NAT

Marc Haisenko haisenko at comdasys.com
Wed Nov 23 13:31:18 CET 2005

On Wednesday 23 November 2005 13:15, Lokesh Kumar wrote:
> Hello Friends,
> I am having some strange problem of one way voice without any NAT.I am
> having pstn gw on public IP, openser on public IP, and a SIP client on
> public IP.I am able to dial from outside phone to my SIP client. When I try
> to talk , the voice passes only in one direction, i.e..from SIP client to
> my outside phone, and not towards other side. What is the reason of this
> problem. Please help me.openser is having all default configuration where
> anyone with any name and password can be allowed to dial.
> I will be very thankfull to you.
> Regards

This sounds like a firewall problem to me, double-check that your firewall 
setup is okay. Maybe temporarily disable it to make sure whether it really is 
your firewall or not.

Marc Haisenko
Comdasys AG

Rüdesheimer Straße 7
D-80686 München
Tel:   +49 (0)89 - 548 43 33 0
Fax:   +49 (0)89 - 548 43 33 29
e-mail: haisenko at comdasys.com

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