DUOPHONE 660  (430-0955)         Specifications        Faxback Doc. # 8060

Typical Memory................................................ 22 Memories
Maximum Digits in Telephone Number..................................... 32
Redial Memory................................................... 40 Digits
Pulse Dialing Rate................................... 10 Pulses per Second
Inter-Digit Pause........................................ 800 Milliseconds
Tone Dialing................................................ Standard DTMF
Access Pause.................................................... 2 Seconds
Display................................... 12 Digit Liquid Crystal Display
Caller ID System Capacity................... About 99 Single Message Calls
                                      47 Multiple Message Calls with Names
Battery...................................... 4 AA Size Alkaline Batteries
Length of ring signal to activate the system.................One full ring

Telephone Parameters

Interface...................................................... Loop Start
Telephone Connection..................... Modular USOC Type RJ11C for Desk
                                                         or RJ11W for Wall
Ringer Type......................... Standard Bridged Ringer 20-60 Hz Sine
                                   or Square Wave 40-130 Volts Ring Signal
Ringer Level @ 20 Hz, 90Vrms, .1': ................................. 81 dB
Ringer Start Voltage @ 20 Hz: .................................... 38 Vrms
Ringer Tap Voltage (long loop): .................................. 110 Vdc
Resistance................................. Greater Than 5 Mohms (on hook)
                                             Less Than 300 Ohms (off hook)
Current.......................................................... 20-80 mA

NOTE:  This phone has Continuous DTMF/Key Following.

Specifications are typical; individual units might vary. Specifications
are subject to change without notice.

(JLC/ir-04/05/95)