LAN Network: 10.1.1.0/24
LAN IP: 10.1.1.5/24
CUCM Publisher: 10.1.1.20/24
CUCM Subscriber: 10.1.1.21/24
WAN IP: DHCP
ITSP: 5.5.5.5/32
!
voice service voip
 ip address trusted list
  ipv4 10.1.1.0 255.255.255.0
  ipv4 5.5.5.5
 address-hiding
 mode border-element
 media bulk-stats
 media disable-detailed-stats
 allow-connections sip to sip
 fax protocol pass-through g711ulaw
 sip
  bind control source-interface GigabitEthernet0/0/0
  bind media source-interface GigabitEthernet0/0/0
  header-passing
  registrar server expires max 600 min 60
  asserted-id pai
  midcall-signaling passthru
  no call service stop
  support-path-header
!
!
voice class uri 10 sip
 host ipv4:10.1.1.20
voice class codec 1
 codec preference 1 g711ulaw
!
!
!
!
voice class e164-pattern-map 100
 description PSTN DIDs
  e164 4165551234
  e164 4165552345
  e164 4165553456
  e164 4165554567
  e164 4165555678
  e164 4165556789
 !
!
voice class e164-pattern-map 102
 description PSTN patterns
  e164 9011T
  e164 91[2-9]..[2-9]......$
  e164 9[2-8]11$
  e164 9[2-9]..[2-9]......$
  e164 9[2-9]......$
 !
!
voice class server-group 100
 ipv4 10.1.1.20 preference 2
 ipv4 10.1.1.21 preference 1
 description CUCM Cluster
!
voice class sip-options-keepalive 100
 description OPTIONS Ping for CUCM servers
!
voice class tenant 100
  registrar 1 dns:sbc.itsp.com expires 300
  credentials username user1 password password realm sbc.itsp.com
  authentication username user1 password password realm sbc.itsp.com
  retry invite 2
  retry response 4
  retry register 10
  sip-server dns:sbc.itsp.com
  host-registrar
  session transport udp
  bind control source-interface GigabitEthernet0/0/1
  bind media source-interface GigabitEthernet0/0/1
  no pass-thru content custom-sdp
  early-offer forced
!
!
voice iec syslog
!
voice register global
 default mode
 no allow-hash-in-dn
 timeouts interdigit 4
 system message "Backup mode"
 max-dn 100
 max-pool 50
 timezone 13
!
voice register pool  1
 translation-profile outgoing SRST-DID-translation
 id network 10.1.1.0 mask 255.255.255.0
 alias 1 4165551234 to 1001
 alias 2 4165552345 to 1002
 alias 3 4165553456 to 1003
 alias 4 4165554567 to 1004
 alias 5 4165555678 to 1005
 presence call-list
 dtmf-relay rtp-nte sip-kpml
 voice-class codec 1
 no vad
!
!
!
voice translation-rule 1
 rule 1 /^911$/ /911/
 rule 2 /^9/ //
!
voice translation-rule 9
 rule 1 /^9\(..........\)$/ /\1/
 rule 2 /^9\(1..........\)$/ /\1/
 rule 3 /^9\(011\)/ /\1/
 rule 4 /^....$/ /9055551234/
!
voice translation-rule 1000
 rule 1 /^4165551234$/ /1001/
 rule 1 /^4165552345$/ /1002/
 rule 1 /^4165553456$/ /1003/
 rule 1 /^4165554567$/ /1004/
 rule 1 /^4165555678$/ /1005/
!
!
voice translation-profile 9-strip
 translate calling 9
 translate called 1
!
voice translation-profile SRST-DID_translation
 translate called 1000
!
!
interface GigabitEthernet0/0/0
 description LAN
 ip address 10.1.1.5 255.255.255.0
 negotiation auto
!
interface GigabitEthernet0/0/1
 ip address dhcp
 ip access-group ITSP-SIP-Trunk in
 media-type rj45
 negotiation auto
 no lldp transmit
 no lldp receive
!
ip route 0.0.0.0 0.0.0.0 10.1.1.1
ip route 5.5.5.5 255.255.255.255 GigabitEthernet0/0/1
!
ip access-list extended ITSP-SIP-Trunk
 10 remark PERMIT DHCP
 10 permit udp any any eq bootpc
 20 permit udp any any eq bootps
 30 remark PERMIT SIP ports
 30 permit udp host 5.5.5.5 any eq 5060
 40 remark PERMIT UDP RTP ports
 40 permit udp host 5.5.5.5 any range 1024 65535
 50 deny   ip any any
!
dial-peer voice 1 voip
 description incoming calls from SIP Trunk
 session protocol sipv2
 incoming called e164-pattern-map 100
 voice-class sip tenant 100
 dtmf-relay rtp-nte
 codec g711ulaw
 no vad
!
dial-peer voice 10 voip
 description incoming calls from CUCM
 session protocol sipv2
 session transport tcp
 incoming uri from 10
 voice-class codec 1  
 dtmf-relay sip-kpml rtp-nte
 no vad
!
dial-peer voice 100 voip
 description DIDs to CUCM
 session protocol sipv2
 session transport tcp
 session server-group 100
 destination e164-pattern-map 100
 voice-class codec 1  
 voice-class sip options-keepalive profile 100
 dtmf-relay sip-kpml rtp-nte
 no vad
!
dial-peer voice 101 voip
 description SIP Trunk Emergency calls
 translation-profile outgoing 9-strip
 destination-pattern 9911$
 session protocol sipv2
 session target ipv4:5.5.5.5
 voice-class codec 1  
 voice-class sip tenant 100
 dtmf-relay rtp-nte
 no vad
!
dial-peer voice 102 voip
 description SIP Trunk PSTN calls
 translation-profile outgoing 9-strip
 session protocol sipv2
 session target ipv4:5.5.5.5
 destination e164-pattern-map 102
 voice-class codec 1  
 voice-class sip tenant 100
 dtmf-relay rtp-nte
 no vad
!
!
sip-ua 
 retry invite 2
!