[Serusers] record-route and pstn gateway problem.

[Jiang zhou]

Hi,all

I have a record route problem:

sip client===>ser====>(pstn)gateway

invite: client---->ser---->gw
ring and 200ok : gw--->ser--->client
ack : client--------------->gw

I use forward command forward pstn call to gateway.
if (uri=~"^sip:9817") {
	rewritehost("xxx.xxx.xxx.xxx");
	forward(xxx.xxx.xxx.xxx,5060);
            	break;
}

There is no record-route field in the 200ok packet. So client forward to gw
directly. 
But when sip client call each other ser insert record-route field. Can
someone tell me
how to config forward command with record-route supported?

Jiangzhou
Best Regards