TELEPHONE INFORMATION


BPO telephone diagrams are all within the N diagram range. To find the right diagram for a telephone add 100 to the telephone model number. e.g. telephone 746 is N diagram 846.

Wall telephones are always an odd number and table types even numbers.

PST telephones are prefixed with 8 and all phones in this range have high impedance bells/tone callers. e.g. high impedance telephone 746 is N diagram 8746

SR OR TSR STANDS FOR TELEPHONE SPECIAL RANGE AND THE MODEL NUMBERS HAVE THE FOLLOWING SUFFIXES

A - NON PBX TELE WITH BUILT IN CALLING DEVICE
B - NON PBX TELE WITHOUT A CALLING DEVICE
C - PBX TELE WITH BUILT IN CALLING DEVICE
D - PBX TELE WITHOUT A CALLING DEVICE
G - MF

OTHER TELEPHONE SUFFIXES
R - EARTH RECALL
RR - REGISTER RECALL (TIMED BREAK)
AR - ALTERNATIVE RECALL (BOTH EARTH AND TIMED BREAK)

OTHER INFO
PST - PLUG AND SOCKET TELEPHONE
SC - SELF CONTAINED
PB - PRESS BUTTON
TBR - TIME BREAK RECALL
LNR - LAST NUMBER REDIAL
 
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Last revised: November 27, 2010

FM