IS-640 IP Speaker Provide a user-friendly control and simple voice & nbsp, Broadcasting. The product & nbsp, is designed to Provide Easy use for any office, department store, factory, school to be able to Quickly broadcast announcements to Their any assigned office or branch or classes (or a group of office or branch or classes). & Nbsp, & nbsp, FeaturesSIP (RFC 3261) compatibleWeb-based configurationWeb-based firmware upgradableHigh efficiency speaker driverPowerful Built-In Amplifier: 40WRemote Control Specifications: Protocols: SIP (RFC2543, RFC3261) codec: G.711 u-law, G.711 A-Law , G.729A, G.729A / BLAN connection & nbsp,: RJ-45 Connector Ethernet I / F 10/100 Mbpspower Supply & nbsp,: 110V-240V 1A (0.5A) Dimensions 17.5 x 28 x 24.5cmWeight: 3kgWarranty 2 years Application: System Integrator Large Multinational firm CorporationDesign & nbsp,