You could solve this problem by making the Siemens phone behave like an automatic ring down phone by making it dial an extension that simulates a dial tone.
Look in the default dialplan, under the features context for such example.
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
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