Panasonic KX-TDA50G Digital Business Phone Systems, expandable up to 56 extensions and 12 COs.

Max Ports up to 28 ports
Max CO Lines 12
Max Analog CO's 12
Max VoIP (H.323) trunks 4
Max VoIP (SIP) trunks up to 8 (with expansion card)
Max Total Extensions up to 24 (48 with DXDP)
Max Analog Proprietary Extensions up to 24 (depends upon phone series/type and power supply)
Max Single Line Telephones 24
Max Digital Proprietary extensions up to 48 (depends upon phone series, power supply, and use of DXDP)
Max IP Proprietary Phone extensions 4
Telephone Compatibility Works with Panasonic KX-T7000, 7400, 7600, 7720, 7731, 7750 series as well as KX-NT136, KX-NT265 and SLTs
Multi-Cell Wireless Compatibility
Maximum Cell Stations (Antennas) 4 standard, up to 8 with additional power supply
Maximum Portable Handsets 28
Maximum Door Phones 4
VoIP Extension 4
SD Card for storing system software and local database information
TAPI 2.1 Compliant Telephone Application Programming Interface Compliant
Universal Call Distribution
Centralized Voicemail with KX-TVA Voice Mail Systems
Direct Station Select (DSS) Consoles 4
Extension Name on Display when Idle
Exclusive Hold
Executive Override
Executive Override Deny
Station to Station Messaging
Station Speed Dial Numbers 100 numbers, 32 digits each
Incoming Call Distribution
Dimensions (H x W x D) 14.8'' x 10.8'' x 4.6''
2 Years Warranty
See KX-TDA50G - Operating Manual
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