Cisco SPA508G 8 Line IP Phone - NewCisco SPA508G 8 Line IP Phone Description: The Cisco SPA508G is an 8 line IP phone that provides access to a wide array of lines and calls for a small business. The SPA508G is compatible with and designed to work on the Cisco UC500 phone system. The Cisco IP phone can either work on SIP or Smart Phone Control Protocol (SPCP). Cisco SPA508G Features: 8 Line Appearances 8 SIP Registrations Backlit Display Four Soft Keys Self Labeling Monochrome Full