Improved version of Bellset No. 39. It consists of a base unit,
complete with switch unit, buzzer and indicator flap. Does not contain a bell. Used on
extension plans 5 & 7 in Auto and CB areas and has to have a Telephone
No. 248 fitted on top.
Bellset No. 44 has the indicator to the left of the sliding switch.
CD users Click here for N4310
- diagrams for Plan 7 system (Bellset No's 39 or 44 with one extension telephone).
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