I am using a Cisco SPA112 FXS 2 Analog Adapter.
During a call, I want to transfer it to another subscriber.
On my analog PBX, I pressed the "R" button to initiate the transfer to another number and then dialed the subscriber number.
Unfortunately SP112 does not recognize the "R" button. The call cannot be forwarded.
What settings do I have to make for this?
Thanks for your help
