| Name | Payphone 90 |
| Date | early 1990s |
| Manufacturer | GEC or STC (depending on batch) |
| Usage | Supervised |
Development of the BT-Payphone 90
| Payphone 90 The BT Payphone 90 did not have a CT (Common Tariffing) number. CT numbers were assigned to payphone models approved for use with the BT Payphone Service under specific regulatory and tariffing frameworks in the UK. However, Payphone 90 was not included in the official list of CT-approved models, as it was a BT-owned and controlled model, rather than a third-party or customer-premises model requiring CT approval. Instead, Payphone 90 was a standard unit used by BT in the early 1990s and was not marketed to other providers or for private installation, meaning it fell outside the remit of the CT scheme. Model: BT Payphone 90 CT Number: Not applicable Manufacturer: GEC or STC (depending on batch) Use: BT-operated public payphones (c. 1990s) Notable: Modular design; LCD display; early digital features |
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