New Zealand Post Office
Telephone HB900 and HB900C

HB900
This is an Automatic, Wall, Bakelite cased telephone.

NZPO Engineering Notes Telephones, Stations, C1400 refers.

Manufactured by British Ericsson their model N1071A2.

Circuit Diagram

HB900C
This is a CB, Wall, Bakelite cased telephone.  It has no dial fitted.

It is used on Public Call Office Circuits and is associated with a BPO Coin Mechanism No. 16B.

NZPO Engineering Notes Telephones, Stations, G1126 refers.

Circuit Diagram

Last revised December 24, 2025

FM2