Router to Router VoIP

[MrEdDJ]

I am new to routers and VoIP, I wanted to learn more so I setup a Cisco 2610 with NW-1V and a VIC-2FXO. From inside my network I can get to the Voice port but from the inter net I am having trouble. I am coming in over a DSL line into a Cisco 827 and have set-up natting to my 2610 router address. I must be missing something in the 827 config because I also can not ping or telnet to the 2610.

Thank for any help in advance.

 

[jgercken]

Can't help you without knowing what you've done. Post your configs. ----------------------------------------
Wasabi Pop Tarts! Write Kellogs today!

 

[BuckWeet]

Post your real goals too..


BuckWeet

 

[MrEdDJ]

The purpose of the the project is to be able to place call from the internet though a pbx connected to the FXO on the 2610 as extention to extention or even extention to outside calls using IP phone software (e.g. netmeeting). Everything works fine from inside the intranet. Here are my configs:

827 config -

version 12.2
no service pad
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname #########
!
ip subnet-zero
ip name-server ###.###.###.###
ip name-server ###.###.###.###
!
!
!
interface Ethernet0
description CRWS Generated text. Please do not delete this:192.168.0.1-255.255.
255.0
ip address 192.168.0.1 255.255.255.0
ip nat inside
hold-queue 100 out
!
interface ATM0
no ip address
atm vc-per-vp 64
no atm ilmi-keepalive
pvc 0/32
encapsulation aal5mux ppp dialer
dialer pool-member 1
!
dsl operating-mode auto
hold-queue 224 in
!
interface Dialer1
ip address negotiated
ip nat outside
encapsulation ppp
dialer pool 1
dialer-group 1
!
ip nat inside source list 102 interface Dialer1 overload
ip nat inside source static 192.168.0.2 ###.###.###.###
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer1
ip http server
!
!
access-list 23 permit 192.168.0.0 0.0.0.255
access-list 102 permit ip 192.168.0.0 0.0.0.255 any
dialer-list 1 protocol ip permit

2610 config -
Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname ########
!
!
!
!
memory-size iomem 10
ip subnet-zero
no ip domain-lookup
!
!
!
!
voice-port 1/0/0
timing digit 300
timing inter-digit 300
connection plar 9
description connected to PBX (x)
!
!
!
dial-peer voice 1 pots
destination-pattern 9..........
port 1/0/0
!
dial-peer voice 2 pots
destination-pattern 87...
port 1/0/0
!
gateway

!
interface Ethernet0/0
description connected to EthernetLAN
ip address 192.168.0.2 255.255.255.0
no ip directed-broadcast
!
interface Serial0/0
no ip address
no ip directed-broadcast
shutdown
!
router rip
version 2
network 192.168.0.0
no auto-summary
!
ip classless
no ip http server


Thanks Again

 

[BuckWeet]

OH, I think I understand what you're saying now. The problem is because you're NATing, you need to get a firewall IOS set so that you can do H.323 fixups. Since you're nating your addresses, the H.323 payload still has its internal IP addresses embedded in the payload and does not get changed..


That is your problem.

BuckWeet

 

[MrEdDJ]

Which unit gets the firewall IOS, the 827 that is connected to the internet or the the 2610 which has the Voice interface. Does this also stop telnet from reaching the 2610? I can't ping or telnet to the 2610 from the internet.

Thanks

 

[Degg]

It appears you do not have a public IP on the 2610, so you cant telnet from the internet. Do you have a public IP on either router? If you have one on the 827, telnet to it first then to th 2610 from the 827. Degg
Network Administrator

 

[MrEdDJ]

OK now I've tried to setup a dmz and asigned a pulic IP to the 2610. I still can't see it from the internet, no ping, no telnet, no ssh. What about access-list? I have no access-list entries and I'm not sure what the entry should look like since I'm not using the serial wan port only the ethernet0/0.

Thanks
MrEdDJ