ET-400 DUoFONE Cordless Telephone System
(430-0550B)                 Specifications             Faxback Doc. # 16898

BASE UNIT

Dialing                  UNIT     NOMINAL    LIMIT

Access Pause             
Manual Access Pause      sec.     2.0        1.8 - 2.2
Flash                    sec.     0.7        0.5 - 0.9

Signal Level
                        
Duration of Signals      ms       100        90 (min.)
Inter-Digital            ms       100        90 (min.)

HANDSET UNIT

Receiver                        UNIT     NOMINAL    LIMIT

Frequency Response       
     at 300Hz                   dB       +3         +3 +/- 6
     at 3000Hz                  dB       -11        -11 +/- 6
Audio Output Power              mV       200        130
Ringer & Call Output Voltage    dB SPL   88         78

Transmitter

Modulation Sensitivity at
  2kHz Dev.                     mV       18         5/ 36

NOTES:  Nominal specs represent the design specs; all units should be
        able to approximate these--some will exceed and some may drop
        slightly below these specs.  Limit specs represent the 
        absolute worst condition that still might be considered 
        acceptable; in no case should a unit perform to less than 
        within any limit spec.

        These specifications reflect changes for the 43-550B version 
        of the basic 43-550 Service Manual.