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External COM Port Phone Bill Calculator

External COM Port Phone Bill Calculator
Our external COM port phone bill calculator is used to manage many phone lines at
the same time. Working with a computer (PC), it connects via a COM port.
1) JT08ccb: 8 lines maximum
2) JT16ccb: 16 lines maximum
Features and specifications:
1) Requires computer with available COM port
2) Conforms to national design standards
3) Multiple rate types include: international, national, local call, special call,
toll-free call, and forbid call
4) Can charge by the polarity change, delay to charge or manual charge
5) Automatically identify the dialed number with a timer error of less than 1 second
6) Automatically adds up the charge of all bills
7) Internal modem supports centralized management
8) Excellent built-in surge protection, excellent stabilization
Operational parameters:
1) Avoid rain, dust, direct sunlight
2) Temperature: -20° C to +40° C
3) Relative humidity: 10% to 95%
4) Timing precision: reversed polarity signal timing precision <1 second
5) Double audio receive code: > 99.99%
6) Damp: ?0.5d B

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