I have a setup where an ATA with FXO port is connected to a PSTN analogue line. I can make calls to and from PSTN over the analogue line with no issues (to/from a softphone registered on the Free PBX).
The analogue line has a Call waiting feature on the PSTN switch. When I am on a call (softphone to/from PSTN) a 3rd party from the PSTN calls the analogue line and I can hear a ‘bip’ on the softphone , indicating there is a call waiting (this tone is generated by the public switch).
Now, as I am using a softphone I do not know how to simulate a ‘Hook Flash’ in order to answer the Call waiting. I need to be able to generate and pass the ‘Hook Flash’ to the analogue line (if I am able to do this the public switch will know to answer the 2nd call and put the other party on hold).
I hope the above is clear and make sense.
Thanks a lot in advance for any help