R-2821#s run
Building configuration...

Current configuration : 2706 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R-2821
!
boot-start-marker
boot-end-marker
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enable secret 5 $1$DFdP$22370WgDm.CMc5CitS1zW/
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no aaa new-model
!
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ip cef
!
!
!
multilink bundle-name authenticated
!         
!
voice-card 0
 no dspfarm
!
!
!
voice service voip 
 address-hiding
 allow-connections h323 to h323
 allow-connections h323 to sip
 allow-connections sip to h323
 allow-connections sip to sip
 h323
  emptycapability
  ip circuit max-calls 1000
  ip circuit default only
 h225 id-passthru 
 h225 connect-passthru 
  h245 passthru tcsnonstd-passthru
 sip
  bind control source-interface GigabitEthernet0/1
  bind media source-interface GigabitEthernet0/1
!         
!
voice class codec 1
 codec preference 1 g711ulaw
!
voice class codec 2
 codec preference 1 g729r8
!
voice class codec 3
 codec preference 1 g723r53
!
voice class codec 4
 codec preference 1 g711ulaw
!
!
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!         
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interface GigabitEthernet0/0
 ip address 158.113.87.157 255.255.255.248
 ip nat inside
 ip virtual-reassembly
 duplex auto
 speed auto
!
interface GigabitEthernet0/1
 ip address 80.15.245.1 255.255.255.252
 ip nat outside
 ip virtual-reassembly
 duplex auto
 speed auto
!
ip route 0.0.0.0 0.0.0.0 80.15.245.2
ip route 158.113.77.0 255.255.255.0 158.113.87.158
ip route 192.168.20.0 255.255.254.0 158.113.87.158
!
!
ip http server
no ip http secure-server
ip nat inside source list 10 interface GigabitEthernet0/1 overload
!
access-list 10 permit 192.168.20.0 0.0.1.255
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!
!
!
!
!
control-plane
!
!         
!
!
!
sccp local GigabitEthernet0/1
sccp ccm 192.168.20.2 identifier 1 version 5.0.1 
sccp
!
sccp ccm group 1
 bind interface GigabitEthernet0/1
 associate ccm 1 priority 1
 associate profile 1 register MTP001BD5164D89
!
dspfarm profile 1 mtp
 description Software MTP
 codec g711ulaw
 codec pass-through
 maximum sessions software 500
 associate application SCCP
!
!
dial-peer voice 44 voip
 destination-pattern 1...
 voice-class codec 2
 session target ipv4:192.168.20.2
 dtmf-relay rtp-nte
!
dial-peer voice 45 voip
 destination-pattern 4...
 voice-class codec 2
 session target ipv4:192.168.20.2
 dtmf-relay rtp-nte
!
dial-peer voice 31 voip
 destination-pattern 3...
 voice-class codec 2
 session target ipv4:80.15.245.2
 dtmf-relay h245-alphanumeric
!
!
! 
!         
line con 0
line aux 0
line vty 0 4
 password cisco
 login    
!         
scheduler allocate 20000 1000
!         
end       
          
R-2821#
R-2821#
R-2821#