sipx on public network

[gurcem]

Hello,

I’ve installed sipXecs onto a server at the office and I configured a public ip address for it. A subdomain is forwarded to this ip address and domain has the reverse dns entry.

At the local network(office) I can register, Receive and send calls successfully with softphones. When I register to sipx from my home (public network), it seems I ‘m registered on the sipx. I can call the numbers on the local, but when the call is answered there is no sound. On SJPhone, we get an acknowledgement error (ACK Time Out).

All ports are open to the use of sipx server on the firewall.

Anyone has an idea about this problem?

Thanks in advance.

[AzBrewsky]

Originally Posted by gurcem

Hello,

I’ve installed sipXecs onto a server at the office and I configured a public ip address for it. A subdomain is forwarded to this ip address and domain has the reverse dns entry.

At the local network(office) I can register, Receive and send calls successfully with softphones. When I register to sipx from my home (public network), it seems I ‘m registered on the sipx. I can call the numbers on the local, but when the call is answered there is no sound. On SJPhone, we get an acknowledgement error (ACK Time Out).

All ports are open to the use of sipx server on the firewall.

Anyone has an idea about this problem?

Thanks in advance.

It's your NAT at home and at work that's causing the issues. The RTP stream after the call is setup always tries to go directly between IP addresses. So at your office your phones may be behind a firewall using 10.x.x.x and your house may be using 192.168.x.x, well the 10.x.x.x doesn't know how to route to 192.168.x.x directly.

Download and install the newer sipX 4.0 that supports remote workers behind a NAT. Then put your PBX behind your firewall and follow the instructions on how to configure the PBX and the remote users.



AzBrewsky