| 摘要 |
Modular public telephones adaptation unit, the invention being part of the modular public telephone management system, actually being a modular public telephones adaptation unit for the modular public telephones management system, which is designed to concentrate and allow access to the packages switching network of such modular telephones as are not connected to the switched telephone network through a validation and identification unit, cooperating for such purpose with validation and identification units that have no direct access to the packages switching network, to communicate credit card processing messages to the validation and invoicing centre, comprising a lines unit, a central processing unit, a communications unit, a feeder unit and the X.25 connector. <IMAGE> |
