[Freeswitch-users] No dial-tone on Siemens C610

[ocset]

Hi

I have deployed 3 cordless Siemens C610 phones on FS and was very 
surprised that there is no dial-tone when a user makes a call. The users 
hears a sound similar to an engage signal while FS makes the connection, 
followed by the sound of the phone ringing once the connection is 
established. (hope that makes sense).

Siemens reckons that is the way their phones behave. Is there a way for 
FS to simulate a dial-tone while the user waits for the other parties 
phone to start ringing?

Thanks
O