You have a G450 and no analog trunk boards to connect the fax to? Or does the VoIP trunk not come into the G450? If you don't have the VoIP trunk coming into the G450 you'll need an IAD, something that'll take a SIP line and convert it to an FXS port like an AudioCodes MP112 FXS -
IP Phone Warehouse is a VoIP and video conferencing distributor and wholesaler with a class-leading portfolio over of 8000 products including from Poly, Yealink, Grandstream, Cisco and more.
Comment