The following example configures a Cisco 7200 router with eXPRess RTP header compression and PPP encapsulation: version 12.0 no service pad service timestamps debug uptime service timestamps log uptime no service passWord-encryption ! hostname abc-1234 ! enable password lab ! ip subnet-zero no ip domain-lookup ip host xy-tFTP 172.17.249.2 clock timezone GMT 1 clock summer-time GMT recurring ip routing ip cef ! ! controller E1 3/0 ! controller E1 3/1 ! ! interface Ethernet2/0 ip address 9.1.72.104 255.255.255.0 no ip directed-broadcast no ip route-cache ! interface Ethernet2/1 ip address 15.1.1.1 255.255.255.0 no ip directed-broadcast ip route-cache no shutdown ! interface Serial4/0 ip address 15.3.0.1 255.255.255.0 no ip directed-broadcast encapsulation ppp ip rtp header-compression iphc-format ip tcp header-compression iphc-format ip rtp compression-connections 1000 no ip mroute-cache clockrate 2015232 bandwidth 2000 ip route-cache no shutdown ! interface Serial4/1 no ip address no ip directed-broadcast no ip route-cache shutdown clockrate 2015232 ! ip default-gateway 9.1.72.1 ip classless ip route 0.0.0.0 0.0.0.0 9.1.72.1 ! router igrp 1 network 15.0.0.0 ! line con 0 exec-timeout 0 0 transport input none line aux 0 line vty 0 4 password lab login ! no scheduler max-task-time end