Dear All, Could someone help me an answer ? I use NM-HDV-1T1-24 card to connect T1 trunk card of Nortel PBX, But I don't know why only got dial tone ,cannot dial success expension number. and my configuration below .. site A controller T1 1/0 framing esf linecode b8zs ds0-group 0 timeslots 1-8 type e&m-immediate-start ! ! voice-port 1/0:0 signal immediate ! ! dial-peer voice 1 pots destination-pattern 3.... port 1/0:0 ! dial-peer voice 7 voip destination-pattern 2... ip precedence 5 session target ipv4:192.168.5.1 site B controller T1 1/0 framing esf linecode b8zs ds0-group 0 timeslots 1-8 type e&m-immediate-start ! ! voice-port 1/0:0 signal immediate ! ! dial-peer voice 1 pots destination-pattern 2.... port 1/0:0 ! dial-peer voice 7 voip destination-pattern 3... ip precedence 5 session target ipv4:192.168.5.2 Thank you all ! [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=12415&t=12415 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]