Authorized in the market as one of the trustworthy manufacturer and supplier a wide assortment of EPABX Trainers in Chennai, Tamil Nadu, India. The offered product is made with superior raw materials and state-of-the-art techniques in compliance to set industry standards. Its one of the best combination of Analog, Digital & Mechanical circuits. The exchange technology has undergone many phase of changes ever since its existence. ST2657 Automatic Telephone Exchange Training / EPABX System forms the basic of telephone exchanges, EPABX technology study.Both manual and automatic switching can be performed. The functional blocks provides easy understanding of the working of the system. Visualizations of the switching and detections makes it unique. A DTMF Telephone Trainer is supplied for better understanding of Telephony. Technical Specifications Number of inputs : 2 Trunk / Direct Lines. Number of extension : 4 Lines. Technology : Cross Point Space Division (Microprocessor based) Standard Features : Tones such as Dial, Busy, Ring etc. Dialing - DTMF and Pulse (Ratio 10pps ) Program Memory : 64 Kb EEPROM Loop Resistance : Extension -600 Ohms, Co-line- 1200 Ohms. Cross Talk Attenuation : >70 dBm Test Points : More than 25 Nos. Power supply : 230 V 10%, 50 Hz / 60 Hz on request Power Consumption : 40.25 VA (approx.) No. of switched faults : 8 No. of test points : 38 Features that can be set : Line Hunting, Direct Access to trunk line, Redial, Line Status Indication.