It is recommended to upgrade this Avaya Product soon.
This product uses IP lines and SIP services to transmit the voice through the internet connection to the other party (data over the signal connection). Teltek’s Nebulosity Cloud PBX and Stratus Cloud PBX are systems which provide this service. We also can adapt analog devices (like fax) to our VoIP system.
The Avaya 9650 IP phone is designed to serve users who spend considerable amounts of time on the phone through intelligent communications and productivity enhancing features. The multi-line premium desk phone offers a color graphical display, larger touch screen and, high definition audio quality.Avaya 9650 User Guide