I have a client that is using a viking relay controller that is attached to an FXO port on the voice gateway. I have speed dials programmed on the phone that send the correct digits out the FXO port to operate the relays which unlock doors.
Everything is currently working, however, the client doesn't like that they have to put a call on hold to operate the door relays under the current config.
Is there a different way to configure this so that an on-going call is not interupted when someone needs to be let through the door(s)?
The Viking device in use is an RC-3.