Dear friends
I have installed an ippbx with sip extension at remote location.client has cyberoam firewall directly connected to cisco layer 3 switch.and 5060 5061 tcp udp and rtp 8000 to 9000 forwarded to ippbx ip in firewall i.e public ip to local ippbx ip.i am able to register sip phone on internet and when call to other extension i gets ringback and other end pick up phone and after 7 sec voice from other side disappear total blank.what can be problem is there anything in firewall.
I have installed an ippbx with sip extension at remote location.client has cyberoam firewall directly connected to cisco layer 3 switch.and 5060 5061 tcp udp and rtp 8000 to 9000 forwarded to ippbx ip in firewall i.e public ip to local ippbx ip.i am able to register sip phone on internet and when call to other extension i gets ringback and other end pick up phone and after 7 sec voice from other side disappear total blank.what can be problem is there anything in firewall.