The KX-NCP series are advanced communication solutions designed to enable businesses achieve unified communications by enhancing and streamlining office communications with presence-enriched productivity applications. 

• Max CO Lines: 128
• Max Analog CO's: 52
• Max VoIP (H.323) trunks: 32
• Max VoIP (SIP) trunks: 64
• Max Analog Proprietary Extensions: 4
• Max IP Proprietary Phone extensions: 128 (64 for KX-NT400)
• Max SIP extensions: 128
• Multi-Cell Wireless Compatible: Yes
• Maximum Cell Stations (Antennas): 4
• Maximum Portable Handsets: 64
• Direct Station Select (DSS) Consoles: 8
• Dimensions (H x W x D): 3.5" x 17" x 13.4"
• Weight: under 15 lbs
• Max Total Extensions: 172
• Max Single Line Telephones : 36
• Max Digital Proprietary extensions: 40 with DXDP (DT300, DT500 series)