CUCM dialplan with GK installed on the HQ router

Tasks to accomplished:
   1. Calls from HQ to BR2 should be made over GK trunk with PSTN as backup
   2. Calls from HQ to BR2 area/city codes  should be made over GK trunk with PSTN as backup
   3. Calls from BR2 to HQ should use 4 digits dialing via GK trunk with PSTN as backup
   4. Calls from BR2 to HQ area/city codes should be made over GK trunk with PSTN as backup 

HQ number = 17752011001
BR2 number = 442321313001 (w/ 011 as international code)

• config BR2 as GW   

interface Loopback0
 ip address 10.10.32.3 255.255.255.255
 ip ospf network point-to-point
 h323-gateway voip interface
 h323-gateway voip id ZONE-01 ipaddr 10.10.32.1 1719  ==== ip addr of HQ Loop0
 h323-gateway voip h323-id BR2
 h323-gateway voip tech-prefix 1#
 h323-gateway voip bind srcaddr 10.10.32.3
gateway      ====  don't forget to turn on gateway feature

• config HQ for GK

gatekeeper
 zone local ZONE-01 cisco.com 10.10.32.1  ==== define GK id
 zone prefix ZONE-01 1* gw-priority 9 TRUNK-GK-HQ_1
 zone prefix ZONE-01 1* gw-priority 0 BR2   ==== avoid sending calls with prefix 1 to BR2
 zone prefix ZONE-01 44* gw-priority 9 BR2
 zone prefix ZONE-01 44* gw-priority 0 TRUNK-GK-HQ_1  ==== avoid sending calls with prefix 44 to CUCM
  zone prefix ZONE-01 1... gw-priority 10 TRUNK-GK-HQ_1  === this is for HQ internal phones
  zone prefix ZONE-01 2... gw-priority 10 TRUNK-GK-HQ_1  === this is for BR1 internal phones
 no shutdown

Configure following for those 4 tasks:

1.    Task #1 -  Calls from HQ to BR2 should be made over GK trunk with PSTN as backup

• In CUCM, add GK with HQ interface Loop0 IP address

• add h.225 (GK controlled) trunk

              - device name = TRUNK-GK-HQ
              - device pool = HQ
              - Inbound Calls , Significant digits = 4   (so that calls from BR2 to HQ will be stripped to 4 digits)

              - Gatekeeper Name = HQ interface Loop0 IP address
              - Terminal Type = gateway
              - Technology Prefix = 1#
              - Zone = ZONE-01

• add GK trunk into a RG
• add RG into RL , name = RL-GK-TO-BR2,  first RG = RG-BR2 , Prefix Digits (Outgoing Calls) = 1#44232131 ,   secondary RG = RG-HQ with Prefix Digits (Outgoing Calls) = +01144232131   RG-HQ served as PSTN backup from HQ to BR2
• add Route Pattern, Route Pattern = 3XXX, Partition = PT-INTERNAL or PT-USA , Gateway/Route List = RL-GK-TO-BR2 .

That should handle outgoing calls from CUCM HQ to BR2. Next, we need to configure BR2 router to handle incoming calls from GK
    voice translation-rule 200
      rule 1 /1#44232131\(....\)/ /\1/
      rule 2 /1#4423\(........\)/ /9\1/
      rule 3 /1#0114423\(........\)/ /9\1/
    voice translation-profile GK-INCOMING
      translate called 200
   dial-peer voice 2000 voip
      translation-profile incoming GK-INCOMING
      incoming called-number 1#.T
     dtmf-relay h245-alphanumeric
      no vad
      codec g729r8

2.   Task #2 -  Calls from HQ to BR2 area/city codes  should be made over GK trunk with PSTN as backup

• Add new RL , name = RL-TEHO-HQ-TO-BR2
• First RG = RG-BR2,  Discard Digit = predot , Prefix Digits (Outgoing Calls) = 1# (remember that user will dial 9 011 4432 XXXXXXXX  for BR2 city/area code)
• Second RG = RG-HQ , Discard Digit = predot trailing # 
• Add new Route Pattern, pattern = 9.0114423XXXXXXXX# , Gateway/Route List = RL-TEHO-HQ-TO-BR2

3.   Task #3 and #4 - Calls from BR2 to HQ/BR1 should use GK trunk with PSTN as backup. Notice that BR2 user will dial 9001775....... for HQ area code numbers and 1XXX for HQ internal phones.

• on CUCM , add PT , CSS , to handle incoming call from BR2 . PT = PT-GK-TRUNK , CSS = CSS-GK-TRUNK with PT-INTERNAL + PT-GK-TRUNK + PT-HQ-LOCAL + PT-HQ-LD _ PT-BR1-LOCAL + PT-BR1-LD
•  Add Translation-Pattern  1#1775.XXXXXXX  (pt = pt-gk-trunk , css=css-gk-trunk). 
  Discard PREDOT , prefix = 9 . Repeat for BR1 area code
• Add Translation-Pattern  1#.XXXX  (pt = pt-gk-trunk , css=css-internal) . Discard PREDOT.  This is for HQ and BR1 internal phones
• Change TRUNK-GK-HQ with CSS = CSS-GK-TRUNK , Significant Digits = ALL

• configure BR2 dial-peer for abbrev. dialing to 1XXX & TEHO dialing to HQ area

                                        voice translation-rule 2    ==== strip out 900
                                                  rule 1 /9001775\(.*\)$/ /1775\1/
                                                  rule 2 /9001312\(.*\)$/ /1312\1/
                                        voice translation-profile teho-to-hq-area
                                                 translate called 2
                                       dial-peer voice 1004 voip
                                                description ==== teho to HQ area code
                                                translation-profile outgoing teho-to-hq-area
                                               destination-pattern 9001775.T
                                                session target ras
                                                tech-prefix 1#

                                     dial-peer voice 2002 voip
                                                description ==== abbrev dialing to HQ
                                                destination-pattern 1...$
                                                session target ras
                                                tech-prefix 1#
                                               dtmf-relay h245-alphanumeric
                                               no vad
                                    ! PSTN backup dial-peer
                                    dial-peer voice 3001 pots
                                              description ==== abbrev. dialing to HQ
                                              prefer 2
                                             destination-pattern 1...$
                                              port 1/0:15
                                             prefix 9001775201