No way to retest these phones as a CallManager system no longer exists. The item "Cisco CP-7965G 7965 SCCP / SIP Unified VoIP IP Telephone Phone PoE Brand New" is in sale since Wednesday, April 12, 2017. This item is in the category "Computers/Tablets & Networking\Enterprise Networking, Servers\VoIP Business Phones/IP PBX". The seller is "conukwue" and is located in White Plains, New York. This item can be shipped to United States.