Hi. I want to connect Cisco7960 phone using IOS CME to Aasterisk VoiceMail system. But, DTMF relay is not work well, so I am able to hear VoiceMail intro and I am not able to contorl Asterisk VoceMail system. Did anyone connect CME to Asterisk VoiceMail system? Asterisk machine IP is 192.168.199.250 , Cisco CME router IP is 192.168.199.254, and Cisco 7960 extension is 64862. My configure is like follws. //Asterisk sip.conf// [64862] type=friend insecure=no username=64862 callerid="Cisco3600"<64862> host=dynamic nat=no canreinvite=no defaultip=192.168.199.254 dtmfmode=rfc2833 mailbox=64862 //Asterisk extensions.conf// exten => _59999,2,VoicemailMain,s${CALLERIDNUM} //Cisco router conf// ! voice service voip sip registrar server expires max 3600 min 360 ! dial-peer voice 4 voip destination-pattern 5+T session protocol sipv2 session target sip-server session transport udp dtmf-relay rtp-nte codec g711ulaw no vad ! sip-ua retry invite 3 retry response 3 retry cancel 3 timers trying 1000 registrar ipv4:192.168.199.250 expires 3600 sip-server ipv4:192.168.199.250 notify telephone-event max-duration 500 ! telephony-service load 7960-7940 P00303020214 max-ephones 24 max-dn 48 ip source-address 192.168.199.254 port 2000 timeouts interdigit 3 timeouts ringing 60 keepalive 45 voicemail 59999# ! ephone 1 keepalive 200 mac-address 000E.38AA.3D01 type 7940 button 1:1 ! How can I do? And, is it possible to connect CME to Asterisk VoiceMail system? Regards.