!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname voip2
!
boot-start-marker
boot-end-marker
!
no aaa new-model
network-clock-participate wic 3 
ip cef
!
!
!
!
no ip domain lookup
ip auth-proxy max-nodata-conns 3
ip admission max-nodata-conns 3
!
isdn switch-type basic-net3
!
voice-card 0
!
!
voice rtp send-recv
!
voice service voip 
 allow-connections sip to sip
 signaling forward unconditional
 sip
  bind control source-interface FastEthernet0/0
  bind media source-interface FastEthernet0/0
!
!
interface Loopback0
 ip address 172.16.255.4 255.255.255.255
!
interface FastEthernet0/0
 ip address 10.0.2.4 255.255.0.0
 duplex auto
 speed auto
!
interface FastEthernet0/1
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface BRI0/3/0
 no ip address
 isdn switch-type basic-net3
 isdn overlap-receiving
 isdn protocol-emulate network
 isdn layer1-emulate network
 isdn incoming-voice voice
 isdn sending-complete
 isdn skipsend-idverify
 line-power
!
interface BRI0/3/1
 no ip address
 isdn switch-type basic-net3
 isdn point-to-point-setup
!
ip forward-protocol nd
!
!
voice-port 0/3/0
 compand-type a-law
 cptone CH
!
voice-port 0/3/1
!
!
!
!
!
dial-peer voice 1 pots
 preference 1
 destination-pattern 1999
 incoming called-number .
 direct-inward-dial
 port 0/3/0
!
dial-peer voice 995 voip
 service session
 destination-pattern ...
 session protocol sipv2
 session target sip-server
 session transport udp
 incoming called-number .
 codec g711alaw
!
sip-ua 
 no remote-party-id
 retry invite 2
 retry response 2
 retry bye 2
 retry cancel 2
 sip-server ipv4:10.0.100.158
!
!
!
telephony-service
 max-conferences 4 gain -6
!
!
end