ET-273 Trim-Fone (430-0591/2/3/9) Specifications Faxback Doc. # 14893 We supply this information to help you answer possible technical questions from your phone company. Interface:......................................................Loop Start Ringer:............................................Standard Bridged Ringer 20-60 Hz Sine or Square Wave 40-130 Volts Ring Signal Current:...............................................20-80 mA (Off Hook) Resistance:..............................................15 MOhm (On Hook) 300 Ohms (Off Hook) NOTE: This phone has Continuous DTMF/Key Following. Specifications are typical; individual units might vary. Specifications are subject to change without notice. (IR/all-04/25/95)