I have an odd request. well it may not be..
If i have a uc500 with 1 analogue FXO line, this is set up for outbound calling. Inbound calls to it are sent through to a fax machine on an FXS. This all works 100%.
The issue i have is our primary outbound calling is over a sip trunk and the fax machine tries to send faxes over it which is only about 60% reliable, but 100% reliable out the analogue line.
Is there away to still use the analogue line for out bound calling from out voip phones( we use this if the sip trunk is down and for some service numbers), but force the fax to always send it's calls out the analogue line. To my knowledge the only way to do this, is to route every number the fax machine is ever going to call out that FXO which is not going to happen.
Can any feature do - if call initiated from FXS0(FAX) then send out the FXO? And still have the FXO as a primary/backup for normal calling?
I am guessing the answer is no as its almost a tenanted phone system feature.