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New Member

H323 to H323 Calling

From what I have read I think that I need to have a Cisco Gatekeeper installed to do h323 to h323 calling. Our current setup is as follow:

Alanlog phone--router-----gateway---pstn

Ther are many of these routers with analog phones hanging off of them.

Calls to and from the PSTN work fine, but I cannot call from one router with analog phones to another.

Do I need to add in a gatekeeper before the gateway router to redirect the calls IP-2-IP, or can I use the Cisco Multiservice IP-to-IP Gateway feature in the Advanced Enterprise Services IOS?

  • Other Collaboration Voice and Video Subjects
6 REPLIES
Silver

Re: H323 to H323 Calling

What I understand from your post is, you have an phone connected to Router A and a phone connected to Router B and you are not able to call between each other.

This should work without using gatekeeper or IP-to-IP gateway. IP-to-IP is required only if you want to send calls between VoIP call legs. In your case, one leg of the call is POTS and the other leg is VoIP. That should work.

Please paste the configs from both routers.

Regards,

Anup

New Member

Re: H323 to H323 Calling

Router A

interface Ethernet0/0

description Connected to Core Network (10.124.102.2)

ip address 10.124.102.1 255.255.255.0

half-duplex

!

!

ip route 0.0.0.0 0.0.0.0 10.124.102.2

ip route 1.1.1.1 255.255.255.255 Null0

!

voice-port 2/0

descrition Analog voice port

echo-cancel coverage 32

timeouts interdigit 3

!

!

dial-peer voice 200 voip

huntstop

destination-pattern .T

session target ipv4:10.254.249.2 "remark address of gateway"

dtmf-relay cisco-rtp

fax rate 7200

ip qos dscp cs5 media

no vad

!

dial-peer voice 100 pots

descrition Analog voice port

huntstop

destination-pattern 5551234

port 2/0

!

Router B

interface Ethernet0/0

description Connected to Core Network (10.124.101.2)

ip address 10.124.101.1 255.255.255.0

half-duplex

!

!

ip route 0.0.0.0 0.0.0.0 10.124.101.2

ip route 1.1.1.1 255.255.255.255 Null0

!

voice-port 2/0

descrition Analog voice port

echo-cancel coverage 32

timeouts interdigit 3

!

!

dial-peer voice 200 voip

huntstop

destination-pattern .T

session target ipv4:10.254.249.2 "remark address of gateway"

dtmf-relay cisco-rtp

fax rate 7200

ip qos dscp cs5 media

no vad

!

dial-peer voice 100 pots

descrition Analog voice port

huntstop

destination-pattern 4441234

port 2/0

!

Router A cannot call Router B via 4441234 or the other way around. Either site can call PSTN, and PSTN can call either site.

Silver

Re: H323 to H323 Calling

Add another dial peer in each router for the remote phone number, as below

Router A

dial-peer voice 210 voip

destination-pattern 4441234

session-target ipv4:10.124.101.1

Router B

dial-peer voice 210 voip

destination-pattern 5551234

session-target ipv4:10.124.102.1

Regards,

Anup

New Member

Re: H323 to H323 Calling

Sorry forgot to mention that we have over 500 sites (router A to router 500) each with at least 4 phone numbers. So given these numbers it would be impossible to add them all.

So from what I gather i think i need a Gatekeeper, right?

Silver

Re: H323 to H323 Calling

Yes, in that case a gatekeeper would be the ideal solution.

Regards,

Anup

New Member

Re: H323 to H323 Calling

So I do need a gatekeeper? I can't use the Cisco Multiservice IP-to-IP Gateway feature in the Advanced Enterprise Services IOS?

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