Application This product monitors all outgoing telephone calls, whether Local / STD / ISD, and gives a printout of various call details at the termination of call. Metering is done on basis of 16KHz / 12KHz metering pulses sent by the telephone exchange. Alternatively, polarity reversal occuring on the line can also be used as call success indication and calculations can be done on basis of long-distance codes fed into the memory. This product is based on the latest micro-controller technology and is approved by the Telecommunication Engineering Centre, Department of Telecommunication, Government of India. This Call Logger comes with either 16 column numeric printer or with 24 column alphanumeric printer. Features The call logger comprises a main unit (which includes micro-controller board, power supply and printer) and a booth display (for the PCO customer). Works on 16KHz / 12KHz metering pulses sent by the exchange. Alternatively, polarity reversal occuring on the line can also be used as call success indication and calculations can be done on basis of long-distance codes previously fed into a non-volatile memory. Remote programmability. Various settings can be accessed or changed telephonically from distant place. User can see monitor's display responding to the commands given telephonically. Booth display operates only on two wires (serial communication between slave and master display.) No expensive flat cables which are susceptible to pick-up electrical interference or damage by rodents. Pulse / Tone compatible i.e. supports slow / fast dialing. Small printout for paper saving. 255 credit accounts (i.e. you can maintain 255 accounts that can be used for conferencing.) Facility to Alter / Erase particular account. Facility of printing 8 digit Machine Serial number and 7 digit PCO number. Facility to print the Cash Subtotal (i.e. summary of the days activity) on demand and automatically at midnight (if the monitor is on at that time). Call record memory of around 1000 calls. You can print the call records either serially or from specific date or from specific call serial number. Facility to Add / Modify / Delete the Codes / Pulse rates. Exclusive programming such as separate Local / STD / ISD / call barring and printing as well. Forty 6-digit programmable local levels for adding service charges. The monitor defeats various attempts by unscrupulous booth operator to make free calls e.g Programmable maximum length of local level to prevent tampering. Monitor detects same number as the exchange even if dialing is done by hook switch tapping. Highly sensitive software cuts the line if tapping is attempted during call progress. Additional facilities with model containing alphanumeric printer- Printing of Booth Name / Advertisements. Printing of called city name. Printing of Account Holder's Name. The call logger can be backed by external 12V re-chargeable lead-acid battery in event of power failure. Adequate charging current is provided for 5AH battery which is sufficient for monitoring of 200 calls in power failure. Battery is not included with the unit. Auto-shut-down after one minute for power saving. Auto-wake-up by lifting the handset or by pressing any key. Polarity-free connection with telephone line with over-voltage / over-current protection. Sleek, trendy, yet rugged. Approved by TEC / BSNL. (Approval No. TEC/WR/I/CHI-02/02/241.AUG.01 Dated 09 August 2001). Dimensions: (approx in mm, excluding projections): 280(w) x 240(d) x 93(h). Weight (approx): 3.8 Kg. Can be customized to suit specific requirements of any country.