Remote Site Need to Setup VOIP phones

[ksledge75]

Hello All,

I have a situation where I need to get a remote site setup with a few IP phones and I have never done anything like this.

I have them setup on our DMVPN with a Cisco 2821 and a default route out to the internet. Remote office is currently using two regular land line phones but would like to add them to our CUCM.

What would I need to get with regards to FXO, or FXS cards for the router.

Do I need to do anything with regards to the current phone lines they have?

I think I can get them setup in our Call Manager but as far as DID numbers for calling externally, do I need to do anything?

Any help would be great.

Thanks,

Kelvin

[Jaime Valencia]

Assuming there is connectivity, you can connect those FXO/FXS cards to your CUCM with MGCP or H.323, same for remote phones, you need to do all the config required for outgoing calls, RP/RL/RG, depending on what you want to configure the behavior to be.

[Dennis Mink]

Are your phones already registered?  If so, your connectivity to Call Manager is fine.  Use MGCP to control the FXS and FXO card I reckon is the easiest way to get your site configured.

Please note that if you use MGCP, you will still need to do some additional dial-peer configuration of you want to use SRST.

Let us know where you are at and send a config, if you are still stuck

[ksledge75]

I guess I should clarify more my situation.

I have this remote office setup with only a DMVPN tunnel connection back to main hub, which is also providing their default route to the internet. When I shipped the router, it had no FXS or FXO cards installed. I plan on using a local tech to get this installed since there are no technical people in that office.

What I need to know is since they have two phones and a fax machine, which card would I need for a 2821? Can they keep their same phone numbers? How do I set them up in my Call Manager. The extent of my Call Manager knowledge is limited. Our Voice engineer left and I am just trying to hold the fort down until they replace him.

I could post the config of the DMVPN router config if that helps.

Current configuration : 4248 bytes
!
version 12.4
service timestamps debug datetime localtime show-timezone
service timestamps log datetime localtime show-timezone
service password-encryption
service sequence-numbers
!
hostname
!
boot-start-marker
boot-end-marker
!
logging message-counter syslog
logging buffered 8192
enable secret 5 $1$u2FR$wancYVM/ZaQNvAsajhwiq0
!
aaa new-model
!
!
aaa group server tacacs+ tacacs1
 server 10.125.1.4
 server 192.168.36.4
 ip tacacs source-interface GigabitEthernet0/1
!
aaa authentication login default group tacacs1 local enable
aaa authentication enable default group tacacs1 enable
aaa authorization exec default group tacacs1 local
!
!
aaa session-id common
clock timezone CST -6
clock summer-time CDT recurring
!
!
!
dot11 syslog
ip source-route
!
!
ip cef
ip vrf outside
!
!
!
ip domain name
ip name-server 10.131.1.8
ip name-server 10.125.1.190
no ipv6 cef
!         
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
voice-card 0
!
!
!

!

!
!
archive
 log config
  hidekeys
!
!
ip tftp source-interface GigabitEthernet0/1
!
class-map type inspect match-all DMVPN-CLASS
 match access-group 101
!
!
policy-map type inspect DMVPN-POLICY
 class type inspect DMVPN-CLASS
  pass
 class class-default
  drop
!
zone security outside
zone-pair security OUT-SELF source outside destination self
 service-policy type inspect DMVPN-POLICY
!
!
!
!
interface Tunnel0
 bandwidth 10240
 ip address 172.16.3.16 255.255.255.224
 no ip redirects
 ip mtu 1400
 ip nhrp authentication
 ip nhrp map multicast dynamic
 ip nhrp map multicast
 ip nhrp map multicast
 ip nhrp map 172.16.3.1
 ip nhrp map 172.16.3.2
 ip nhrp map multicast
 ip nhrp map 172.16.3.3
 ip nhrp network-id 100
 ip nhrp holdtime 300
 ip nhrp nhs 172.16.3.1
 ip nhrp nhs 172.16.3.2
 ip nhrp nhs 172.16.3.3
 ip tcp adjust-mss 1360
 qos pre-classify
 tunnel source GigabitEthernet0/0
 tunnel mode gre multipoint
 tunnel key
 tunnel vrf outside
 tunnel protection ipsec profile DMVPN
!
interface GigabitEthernet0/0
 description WAN Connection
 ip vrf forwarding outside
 ip address
 zone-member security outside
 duplex auto
 speed auto
 no cdp enable
!
interface GigabitEthernet0/1
 description LAN Connection
 ip address 192.168.20.1 255.255.255.0
 duplex auto
 speed auto
!
router eigrp 10
 passive-interface default
 no passive-interface GigabitEthernet0/1
 no passive-interface Tunnel0
 network 172.16.3.16 0.0.0.0
 network 192.168.20.1 0.0.0.0
 distribute-list prefix DMVPN-OUT out Tunnel0
 distribute-list prefix DMVPN-IN in Tunnel0
 no auto-summary
!
ip forward-protocol nd
ip route vrf outside 0.0.0.0 0.0.0.0
no ip http server
no ip http secure-server
!
!
!
!
ip prefix-list DMVPN-IN seq 5 permit 10.0.0.0/8 le 32
ip prefix-list DMVPN-IN seq 10 permit 192.168.0.0/16 le 32
ip prefix-list DMVPN-IN seq 15 permit 0.0.0.0/0 le 32
!
ip prefix-list DMVPN-OUT seq 5 permit 192.168.20.0/24 le 32
access-list 101 permit gre any any
access-list 101 permit icmp any any
access-list 101 permit esp any any
access-list 101 permit udp any any eq isakmp
access-list 101 permit udp any any eq non500-isakmp
access-list 101 permit ip any any
!
!
!
!
!

control-plane
!
!
!
!
!
!
!
!
!
!
line con 0
 exec-timeout 0 0
line aux 0
line vty 0 4
 exec-timeout 15 0
 transport input telnet ssh
!
scheduler allocate 20000 1000
ntp server 64.113.32.5 prefer
end

...and a show inventory to show what modules I have installed.

# sho inventory
NAME: "2821 chassis", DESCR: "2821 chassis"
PID: CISCO2821         , VID: V07 , SN: FCZ1411714T

NAME: "Virtual Private Network (VPN) Module on Slot 0", DESCR: "Encryption AIM Element"
PID: AIM-VPN/SSL-2     , VID: V01, SN: FOC11233V07

If anyone could just provide an overview of how I would go about configuring this router and what hardware I would need to buy, that would help tremendously.

[Dennis Mink]

For your FXO  (this is where you will plug in your PSTN lines), depending on how many PSTN lines you have:

http://www.cisco.com/c/en/us/support/docs/routers/3600-series-multiservice-platforms/12444-2fxo-vic.html

For your FXS (this is where your fax plugs in):

http://www.cisco.com/c/en/us/support/docs/voice/analog-signaling-e-m-did-fxs-fxo/7938-2fxs-vic.html

sure you can you the same numbers.