Taken from working units broken to sell as parts.

The Samsung 19901 OfficeServ OS7030 2DM 4 Channel ISDN Module is a high-quality accessory designed for telephone and answering systems in a business setting. With a single unit quantity, this module is perfect for expanding the capabilities of your office communication system. Samsung's reputation for reliability ensures that this module will provide seamless integration and functionality for your business needs. The product also comes with VAT and delivery included, making it a convenient and efficient choice for enhancing your office setup.