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No voice when pickup phone(Both end)

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


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:


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

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

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

4. 7940 ip address 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.


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:


Call manager ip address is Public Ip ( is port forwarding to 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 ( Public ip port forwarding to my call manager and succefully registering all the above three phones in ccm.

Call manager is behind PIX firewall and my pix config is: Please see attachment.

Community Member

Re: No voice when pickup phone(Both end)

Any help


Community Member

Re: No voice when pickup phone(Both end)

any help

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