Model: Chand hearing CDX-TP880 Telephone Exchanges (metal) Capacity: TP-880 4 into 16 basic configuration can be expanded to 8 into 80; 50 seconds to configure computer traffic. This machine is filled with all using the telephone line interface, the port number clearly marked, easy installation Weight: 7KGS / Desk Dimensions: 34.5 * 25 * 13.3CM Packing size: 37 * 31 * 16.5CM can be customized: door machine \ lock \, to be ordered charges, please consult the online customer service staff. Features: 1, using professional-grade chip, compatible dual system Caller 2, can be used to send the transfer of dual-mode technology 3, 4,99 group conversion mode at night PIN 5, switching power supply, can be equipped with back-up battery 6, external music interface, broadcasting function 7, 8 relay associated intelligent, modular design can be flexibly extended 9, PC computer programming interface, compatible with CDX billing software 10, 3000 up to the billing data can be stored power failure, reverse polarity meter Fees signal detection 11, the original 11 selected polyphonic music automatically on a daily basis for music, voice reporting function 12,4 doorways inside the state machine 13 automatic redial feature 141 3-way voice segment 50 seconds from 15-bit busy Save over 16 power failure transfer settings set eight numbers call barring 17 external lines can monitor more than 18 groups 8 prefix routing decision can set four different sets of 19 sub-unit 20 and the call can automatically keep the original call by a simple operation and Switching to another call requires a detailed understanding of the customer go to download instructions or software: Chand News official website: http: //www.cdx8000.com/ Features: Super Lightning efficient switching power outage total station caller ID memory 50 seconds can be set for some two three four segments recording computer operator manual / automatic duty piano music out ways to retain elasticity multiple intercom calls to cable coding secondary external music source backup battery charging PC programming interface reverse polarity charging power outages Save 3000 records hotel manager secretary private password real time clock alarm clock function day and night mode (automatic) Radio Interface Speed ??Dial extension insider status automatically dial automatic IP packet routing relay associated economic restrictions call ringing tones to identify talk extension set age limit access substituting for three-way calling call forwarding programming system password distal grouping outside busy off-site transfer Disturb Paging conference line selection to allocate an appointment outside outside outside turn outside the switchboard is set to retain self-reported number of listeners outside the prompt transfer of the extension set to retain power outage hotline Abbreviated Dialing Voice OGM native PC download ring tones perfect switchboard function