Fujitsu Limited H-Type Private Automatic Branch Exchange Maintenance Test Telephone

This is a Batten-ski, a handset primarily used for maintenance of H-type Private Automatic Branch Exchanges (PABX). It is a specification product of Nippon Telegraph and Telephone Public Corporation, manufactured by Fuji Tsushinki Seizo Co., Ltd. (now Fujitsu) in 1955. HP stands for H type Private Exchange. The plug is a TRS (Tip, Ring, and Sleeve) type. It uses a Type 3 dial, the same as that used in Type 3 automatic telephones, but the return is slightly slower due to age-related deterioration. The Type 3 dial is manufactured by Taiko (Daikoh Electric Manufacturing Co., Ltd.). The paint on the grip is partially peeled off. The heavy Fujitsu nameplate tells the story of the era.
The receiver and transmitter are manufactured to the specifications of Germany's Siemens AG. This is likely due to Fujitsu being a joint venture between the Furukawa Group and Siemens-Halske of Germany. Fujitsu manufactured the H-type automatic exchange developed by Siemens, which was introduced in telephone exchanges in limited areas of Osaka, Kobe, Nara, Yokohama, and Kitakyushu. In other regions, A-type exchanges using the Strowger system developed in the United States were used. It has been nearly 70 years, so this may now be a rare item. While it may no longer be in use, we encourage those involved with Fujitsu, those who worked with cabinet-type PABXs such as the HP4, or anyone interested, to consider this item.

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