Hello , I will appreciate to get assisted with trunk setup, am getting bad request response on both incoming and outgoing callls Have tried all option possible but no luck My network diagram ------------------------------ softphone < --------> Asterisk PBX (On device&user mode) <------------> Cisco Router< ------------------------------> Service Provider (10.50.37.84) (10.50.37.82) (10.50.37.81 inside) (10.50.3.161) My SIP Trunks:(Using IP Authentication) Outbound setting ------------------------ host=10.50.3.161 type=friend qualify=yes dtmfmode=rfc2833 context=from-pstn insecure=port,invite disallow=all allow=alaw&ulaw&g729 sip_general_additional.conf ------------------------------------------- vmexten=*97 faxdetect=no context=from-sip-external callerid=Unknown notifyringing=yes notifyhold=yes tos_sip=cs3 tos_audio=ef tos_video=af41 alwaysauthreject=yes useragent=GHJ-2.11.0(11.8.1) disallow=all allow=ulaw allow=alaw allow=g729 allow=gsm allowexternaldomains=no autodomain=no callerid=asterisk callevents=yes jbenable=no defaultexpiry=120 allowguest=yes srvlookup=yes minexpiry=60 maxexpiry=3600 registerattempts=0 registertimeout=20 g726nonstandard=yes videosupport=no maxcallbitrate=384 canreinvite=no rtptimeout=30 rtpholdtimeout=300 rtpkeepalive=0 checkmwi=10 notifyringing=yes notifyhold=yes nat=no