Hi Al Baqari, i attach config gateway configuration in cucm and the following config in router gateway : ! voice-card 0 ! ! ! ! ! ! ! ! license udi pid CISCO2911/K9 sn FGL1747117X license accept end user agreement hw-module pvdm 0/0 ! ! ! username admincisco password 0 P@ssw0rd.1 ! redundancy ! ! ! ! ! ! interface Embedded-Service-Engine0/0 no ip address shutdown ! interface GigabitEthernet0/0 ip address 114.28.23.5 255.255.255.0 duplex auto speed auto ! interface GigabitEthernet0/1 no ip address shutdown duplex auto speed auto ! interface GigabitEthernet0/2 no ip address shutdown duplex auto speed auto ! ip default-gateway 114.28.23.1 ip forward-protocol nd ! no ip http server no ip http secure-server ! ip route 0.0.0.0 0.0.0.0 114.28.23.1 ! ! ! ! control-plane ! ! voice-port 0/0/0 trunk-group 1 supervisory disconnect dualtone mid-call cptone ID timeouts call-disconnect 5 timeouts wait-release 5 connection plar opx 101 description 5703886 ! voice-port 0/0/1 trunk-group 1 supervisory disconnect dualtone mid-call cptone ID timeouts call-disconnect 5 timeouts wait-release 5 connection plar opx 101 description 5707709 ! voice-port 0/0/2 trunk-group 1 supervisory disconnect dualtone mid-call cptone ID timeouts call-disconnect 5 timeouts wait-release 5 connection plar opx 101 description 5707540 ! voice-port 0/0/3 trunk-group 1 supervisory disconnect dualtone mid-call cptone ID timeouts call-disconnect 5 timeouts wait-release 5 connection plar opx 101 description 7505151 ! voice-port 0/1/0 trunk-group 1 supervisory disconnect dualtone mid-call cptone ID timeouts call-disconnect 5 timeouts wait-release 5 connection plar opx 101 description 5707741 ! voice-port 0/1/1 trunk-group 1 supervisory disconnect dualtone mid-call cptone ID timeouts call-disconnect 5 timeouts wait-release 5 connection plar opx 101 description 5736789 ! voice-port 0/1/2 trunk-group 1 supervisory disconnect dualtone mid-call cptone ID timeouts call-disconnect 5 timeouts wait-release 5 connection plar opx 101 description 5705151 ! voice-port 0/1/3 trunk-group 1 supervisory disconnect dualtone mid-call cptone ID timeouts call-disconnect 5 timeouts wait-release 5 connection plar opx 101 description 2920 ! ! ! ! ccm-manager fallback-mgcp ccm-manager mgcp no ccm-manager fax protocol cisco ccm-manager music-on-hold ccm-manager config server 114.28.23.8 ccm-manager config ! mgcp mgcp call-agent 114.28.23.8 2427 service-type mgcp version 0.1 mgcp dtmf-relay voip codec all mode out-of-band mgcp rtp unreachable timeout 1000 action notify mgcp modem passthrough voip mode nse mgcp package-capability rtp-package mgcp package-capability sst-package mgcp package-capability pre-package no mgcp package-capability res-package no mgcp timer receive-rtcp mgcp sdp simple mgcp fax t38 inhibit ! mgcp profile default ! ! dial-peer voice 999000 pots service mgcpapp port 0/0/0 ! dial-peer voice 999001 pots service mgcpapp port 0/0/1 ! dial-peer voice 999003 pots service mgcpapp port 0/0/3 ! dial-peer voice 999002 pots service mgcpapp port 0/0/2 ! dial-peer voice 999010 pots service mgcpapp port 0/1/0 ! dial-peer voice 999011 pots service mgcpapp port 0/1/1 ! dial-peer voice 999012 pots service mgcpapp port 0/1/2 ! dial-peer voice 999013 pots service mgcpapp port 0/1/3 ! dial-peer voice 1 pots trunkgroup 1 destination-pattern 9T ! dial-peer voice 2 pots ! ! ! ! gatekeeper shutdown ! ! ! line con 0 login local line aux 0 line 2 no activation-character no exec transport preferred none transport output pad telnet rlogin lapb-ta mop udptn v120 ssh stopbits 1 line vty 0 4 login local transport input all ! scheduler allocate 20000 1000 ! end