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New Member

Any Cisco Call Manager Experts

Hi i have just installed ccm 4.1.2. I successfully registered 3 ip phones

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Tftp sever is pulling all three files from ip phones and getting registered in ccm. All the phones in ccm is registered and showing ip addresses of each phone. Given below more details:

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1. Call manager Ip Address: 192.168.2.150- Location Florida- Using Pix 520-Public Ip port forwarding to ccm(port 69 and 2000)

2. 7940 ip address 10.1.1.30 Location melbourne - No VPN Tunnel and PIX

3. 7940 ip address 192.168.0.50-Location Chicago - No VPN Tunnel and PIX

4. 7940 ip address 192.168.1.30 Location Auckland - No VPN Tunnel and PIX

Above three phones are in different location as you can see above subnet.

=> From 1 i can call 2 and 3 and vice versa. All 3 phones can receive and make calls but no voice.

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Please note i am not using gateway.

Here is my simple setup using only CCM and Ip phones no other devices is configure or registered in CMM except IP phones 7940 and would like to do the testing with ccm alocated extensions:

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Call manager ip address is 192.168.2.150. Public Ip (209.64.121.xxx) is port forwarding to 192.168.2.150 which is call manager.

I have three phones on different locations which is registered in call manager. I am using tftp server as a public Ip (209.64.121.xxx)this Public ip port forwarding to my call manager and succefully registering all the above three phones in ccm.

Call manager is behind PIX firewall.

Thanks

6 REPLIES
New Member

Re: Any Cisco Call Manager Experts

Sounds like all the phones can see the Call Manager ok but can't see each other.

Call Manager is setting up the calls but then steps out the way when the converstaion begins and the phones talk directly to eachother. I would therefore guess the problem ia a routing issue. Have you checked all the routing between phone subnets?

New Member

Re: Any Cisco Call Manager Experts

Im agree with George , between subnets can you ping everywhere??? on the pix is the udp range ports 16,000 to 32,000 open?? if it?s not my guess is you won?t have any sound.

New Member

Re: Any Cisco Call Manager Experts

Please see my atached PIX configuration.

Since all the phones in different location. Hence unable to ping each other and as you you its impossible to ping from one location inside interface to another location inside interface unless we using vpn tunnel between all locations.

Phones are registering and working fine with in the same network. I already did the testing.

Any suggestion reolve this issue.

thanks once again to all.

New Member

Re: Any Cisco Call Manager Experts

any suggestions

Thanks

New Member

Re: Any Cisco Call Manager Experts

The phones need to be on a well-connected network. You will have to design the network to allow every phone to reach every other phone. As it was stated earlier, Call Manager only handles the call signalling. Each phone must be able to contact the Call Manager to register, make calls, etc. Once a call is made and connected, the Call Manager notifies each phone with the address to send the RTP (voice) stream.

New Member

Re: Any Cisco Call Manager Experts

Thanks for replying.

The only solution is creating VPN tunnel between all the location is that right?

If so i cant do this, because travel a lot i would like to carry phone with me to communicate my staff.

So in the above scenario you mean it is impossible to communicate?

Thanks

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