Hi, I have two questions about FS: Question 1: i'm developing a custom client sip with pjsip. This client when receive a call that can't be accepted respond with status 603. I think that freeswitch filter this status. This is an example of desired behaviour: 1000@localnet_ip FS(ip:localnet_ip) 1001@localnet_ip INVITE ----------> INVITE ---------------> <-------------- trying<--------------------trying <-------------- 603<------------------ 603 ACK ------------> ACK------------------> The current behaviour of FS is: 1000@localnet_ip FS(ip:localnet_ip) 1001@localnet_ip INVITE ----------> INVITE ---------------> <-------------- trying<--------------------trying <------------------ 603 <-------------- 200 ACK------------------> <--------------------BYE I'd like to avoid the current behaviour. It's possible a kind of message status path trough? If the called party terminate the call before answering, FS send always to the calling partner 200 and BYE. First thought was related to the voice-mail. Now voice-mail is disabled but the behaviour is the same. Question:2 It's possible a custom Header pass trough in status response like trying or session in progress? I'm able to use custom header only on invite adding to invite a header with name like X-myheader. Any suggestion? Thanks Good Evening Alessandro -- Ing. Alessandro Luppi Software development Seletech srl Via Collodi 8, 20052 Monza (MI) - Italy Tel: +39.039.5962000 - Fax: +39.039.9716905 email:a.luppi@seletech.com - Web:www.seletech.com orwww.seletech.eu