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 equipment.

AEI produced some of these handsets for the BPO.  The Handset No. 6 was their Handset MTH 64A, which contained their Transmitter-Inset No. 27E and Receiver No. 62B.  Moulded in A.B.S. Copolymer.

3 Internal
Issue 2, May 1973

HANDSETS No's 6, 6A 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.

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 Diagram N861.

Handset No. 6 will provides a change over switch which can be wired as required.  The type of cord, which must be requisitioned separately, and the method of wiring are shown in Diagram SA/SAW10060.

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 Diagram N4403.

Breakdown of parts for the Handset No. 6.

Switch No. 5A
Receiver-Inset No. 4T
Part No. 1/DRI/50
Earpiece No. 26A
Transmitter-Inset No. 13C or Transmitter-Inset No. 16 with Part No. 1/DRI/50.

Diagram - N861.

Drawings - 91483 and 92340.

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Last revised: November 18, 2023