cisco 3640 with cisco 827 4V

[ndenicano]

Hi!

I have the following scheme in my network:

-------(1)-PBX-(82)-------

| |

CISCO3640 CISCO827 4V

When I call => (82)+extension and inmediatly I hang the call the phone stops sounding.

In the opposite case=>(1)+extension The telephone gives 5 tones before hanging.

I need help!!!

Thanks

[ndenicano]

The only one command that I saw it was the next:

madrou2(config-voiceport)#timeouts ringing 5

But it does not allow to put:

madrou2(config-voiceport)#timeouts ringing 1

Help!!!