| Name | CT No. 735 |
| Date | 1962-1980s |
| Manufacturer | BPO- ATM (Automatic Telephone Manufacturing Company) |
| Usage | Booths |
| Further notes |
| CT735 The CT No. 735 was a British Post Office (GPO) payphone introduced in the late 1960s as an upgraded Pay-on-Answer (POA) model designed for use in public telephone kiosks and some institutional settings like hospitals and hostels. It featured an integrated coin mechanism, rotary dial, and a more compact, vandal-resistant housing compared to earlier models such as the No. 705. The 735 was compatible with the UK’s pulse-dial telephone network and required specific exchange equipment to process coin signals. A portable version, the 735L, was developed for temporary installations in hospitals and remote facilities. Although primarily used throughout the UK in red K6 and K8 kiosks, limited exports occurred to other Commonwealth countries for use in British-built installations. The 735 replaced older coin box types like the No. 706 fitted with separate coin units and remained in service through the 1970s and into the 1980s. It was eventually discontinued and replaced by electronic push-button models and card-operated payphones that were easier to maintain and better suited to modern telecom systems. |
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