Features: 1) Card expansion structure, expandable freely 2) Wire / wireless flexible assembled 3) 3 pieces OGM for auto-attendant 4) Small message group sending 5) Internal and external caller ID 6) Caller ID transferred 7) Call forwarding 8) Power switch (80V to 260V) 9) Internal back-up battery (24 hours) 10) Ring back when no answer 11) Call pick up, help to make external call by assistant 12) Inquiry transferred / 3 way conference (1 CO + 2 Ext) 13) Call forwarding / ringing extension assignment 14) Internal or external music on holding 15) Flash time selection 16) Various external dialing mode 17) Trunk group 18) Outgoing call restriction 19) Self-report extension number and ringing detection 20) Voice record for CO line or extension by telephone voice recorder 21) Supplies reverse signal (wireless card) 22) Auto IP dialing (wireless card) 23) Receives and sends fax by PHS wireless card 24) Thunder protection (3Kv) and resist interference TC-2000H PC Bill Charge System: 1) Caller ID, record of received call and miss called 2) Outgoing call and incoming call record 3) PABX data setting interface 4) WINDOWS software 5) Actual time monitor interface 6) Man-PC programming and operating 7) Delay / reverse detected charge mode optional 8) Full charge and discount for holidays charge mode 9) Freely setting time unit for charge 10) Limitless groups charge rate setting and prefix-digit management 11) Various charge rate management for city call, long-distance call, IP call 12) Call bill memory and classify print bill TC-2000H Small Message Group Sending Software: 1) Multi-group sending 2) Appointed number sending 3) Time validity setting 4) Supports maximum 280 English words Packing: Standard export packing