This is the phone that started it all. In fact, more hotels use Teledex Diamond Series than any other guest room telephones. With over 5 million in service worldwide, this analog corded phone is available in single or two-line models, with up to 10 programmable guest service keys, patented OneTouch voice mail retrieval technology, and optional speakerphone. Click here for product details, here to view the video, or here to request a quote.