Guys, I have configured Astrisk , because until now I don't have any TDM card in my box , I configured trunk between Astrisk and Cisco 5350 . So I am sending all calls to Cisco 5350 , that is connected to TDM. Here is output from my extension_additional.conf [ext-local] exten => 1020,1,Macro(exten-vm,novm,1020) exten => 2000,1,Macro(exten-vm,novm,2000) exten => 2001,1,Macro(exten-vm,novm,2001) exten => 2005,1,Macro(exten-vm,novm,2005) exten => 2006,1,Macro(exten-vm,novm,2006) exten => 2007,1,Macro(exten-vm,novm,2007) exten => 2008,1,Macro(exten-vm,novm,2008) exten => 5000,1,Macro(exten-vm,novm,5000) [outbound-trunks] ;exten => _${DIAL_OUT_2}.,1,Macro(dialout,2,${EXTEN}) exten => _${DIAL_OUT_2}.,1,Macro(dialout,2,11963${EXTEN-1}) What I need is if 2000 extension is calling , send this traffic to 5350 with prefix 1963 if 2001 extension is calling , send this traffic to 5350 with prefix 1964 atc. Can somebody to help me. Thanks Rene