| Handset with microphone cut off button fitted on one side of earpiece. Handset No. 6 is
used with 700 type telephones and on switchboards for supervisory or secrecy purposes.
Grey, black and ivory
Handset No. 6A-2 is fitted with a 6 way cord and is used for controlling dictation
C MARKETING INSTALLATION
Issue 2, May 1973
HANDSETS No's 6 AND 6A-2
Description and Installation
This Instruction describes Handsets Nos. 6 and 6A-2. They are similar in appearance to the
Handset No. 3 but they both incorporate a change-over switch and the Handset No. 6A-2 is
supplied with a 6-way cord fitted.
Handset No. 6 is shown above.
The change-over switch (Switch No. 5A) is contained within the receiver cavity, behind the
receiver-inset, and is fixed to a bracket with three arms which locate on the three
moulded ribs. A separate nylon press-button engages with the switch plunger and projects
through a hole in the moulding in such a position that inadvertent operation cannot take
place by laying the handset on a flat surface. As supplied the press-button is non-locking
but removal of a small screw in the bracket adjacent to the plunger and press-button
allows the switch to be either non-locking if the press-button is directly pressed or
locking if it is depressed and slid to one side. The screw should be placed in the parking
position provided by the threaded hole in the bracket. The switch is wired to a terminal
plate in the transmitter cavity.
Handset No. 6 will normally be used to provide transmitter cut-out facilities. The type
of cord, which must be requisitioned separately, and the method of wiring are shown in Dgm
Handset No. 6A-2 will normally be used to provide remote control of dictation
equipment. The method of connection to the telephone is shown in Dgm N 4403.
Breakdown of parts for the Handset No. 6.
The Transmitter No. 13C was later superseded by a Transmitter
No. 16 which also needed a Part No. 1/DRI/50.