CISCO - SMALL BUSINESS SPA 501G - VOIP PHONE - SIP, SIP V2, SPCP - 8 LINES (SPA501G). KEY FEATURES : PRODUCT TYPE : VOIP PHONE MAIN FEATURES : MULTILINE SUPPORT, MULTIPLE VOIP PROTOCOL SUPPORT, INTEGRATED ETHERNET SWITCH, POWER OVER ETHERNET (POE) SUPPORT VOIP PROTOCOLS : SIP, SIP V2, SPCP VOICE CODECS : G.722, G.729A, G.711U, G.711A, G.726 LINES SUPPORTED : 8 LINES DESIGNED FOR : SMALL BUSINESS PRO UNIFIED COMMUNICATIONS 320 WITH 4 FXO CONDITION : NEW FACTORY SEALED. AVAILABILITY : IN STOCK. OUR WARRANTY : 30 DAYS.