Hi Kemal You can do this with voice class server-group with round-robin hunt scheme. For example !voice class server-group 1 ipv4 <ip ISP A> preference 1 ipv4 <ip ISP B> preference 2  hunt-scheme round-robin! dial-peer voice 2 voip destination-patter...

Hi Baktha Can you share how you use QRT on your environment?

Hi Vladimir,We had the same problem.And I solved this without SNMP via this applets: event manager applet siptrunk_down event syslog pattern "%SIP-5-DIALPEER_STATUS: VoIP dial-Peer <901> is Busied out" action 001 cli command "enable" action 002 cli ...