Audio power hearing aid battery

The Cisco SPA504g is a 4 line VoIP phone which features a large backlit LCD, 2 switched 10/100 ports, and Cisco HD Voice. Supporting either SIP or SPCP, the Cisco SPA504G is the perfect IP phone for hosted VoIP or premise based IP PBX systems. Cisco SPA504G Features & Functions: 4-Line Phone Dual switched ethernet ports IEEE 802.3af PoE (Power Over Ethernet) Supports SIP or SPCP protocol G.729 and G.722 Wideband Audio Support Menu driven user interface Web based GUI, remote provisioning IP dialing support Hi Res LCD Display 2.5mm stereo headset connector AUX port (SPA932 or SPA500S attendant console is supported) High quality audio handset Full duplex hands free speakerphone Hearing aid compatability (HAC) Support calls between TTY's Works well with GN Netcom, Jabra and Plantronics wired headsets Optional PA100 Power Adapter and MB100 Wall Mount Adapter