i've 2 servers one of servers is using elastix and other is xipar xipar has got a node which number is 1999 and when i registered a sip account on xipar then i could connect node 1999 via rpt extention. i've configured sip trunk between xipar and elastix. that works fine. but the problem is when pstn call came to elastix server, i want to direct it to my xipar server node (1999). How can i configure this?