voice service voip
 ip address trusted list
  ipv4 192.168.42.29
  ipv4 192.168.42.30
  ipv4 192.168.42.31
 mode border-element
 allow-connections h323 to h323
 allow-connections h323 to sip
 allow-connections sip to h323
 allow-connections sip to sip
 no supplementary-service sip moved-temporarily
 redirect ip2ip
 fax protocol t38 version 0 ls-redundancy 0 hs-redundancy 0 fallback none
 sip
  bind control source-interface FastEthernet0/0/1---------->interface goes to pstan
  bind media source-interface FastEthernet0/0/1
  min-se 300
  session refresh
  header-passing
  error-passthru
  registrar server
  early-offer forced
  midcall-signaling passthru
!
voice class codec 1
 codec preference 1 g711alaw
 codec preference 2 g711ulaw
 codec preference 3 g729r8
 codec preference 4 g729br8
!
!
!
voice class server-group 1
 ipv4 192.168.42.31     ------->cucm
 ipv4 192.168.42.30 preference 1 -------------->cucm
 ipv4 192.168.42.29 preference 2 -------------->cucm
 ipv4 30.16.1.1 preference 3     -------------->router interface
!
!
voice register global
 mode esrst
 no allow-hash-in-dn
 system message WAN is Down
 max-dn 100
 max-pool 100
!
voice register pool  1
 id network 30.116.0.0 mask 255.255.0.0 ----->IP Phone Range
 dtmf-relay rtp-nte
 codec g711ulaw
 no vad


dial-peer voice 1 voip
 translation-profile incoming 1
 incoming called-number .
 dtmf-relay rtp-nte
 codec g711alaw
 no vad
!
dial-peer voice 3 voip
 description To-CUCM-PUB
 destination-pattern 44..
 session protocol sipv2
 session transport tcp
 session server-group 1
 dtmf-relay rtp-nte sip-notify sip-kpml
 codec g711alaw
 no vad
!
dial-peer voice 2 voip
 description call to PSTN
 translation-profile outgoing 2
 destination-pattern .T
 session protocol sipv2
 session target ipv4:10.30.1.4:5166
 dtmf-relay rtp-nte
 codec g711alaw
 no vad
!
dial-peer voice 4 voip
 redirect ip2ip
!
!
gateway
 timer receive-rtp 1200
!
sip-ua
 registrar ipv4:30.16.1.1 expires 3600