Labels:text | screenshot | diagram | rectangle OCR: GETTING PERSONAL, Central Office ISDN NT-1 U adopter Analog modem Telephone Analog telephone support Answering machine Figure 2: Personal ISDN adapters, such as U.S. Robotics' Courier I-Modem, pack in everything except the kitchen sink. Analog telephone devices can be plugged into the adapter providing bigh-quality analog connections over a digital line. Many personal ISDN routers such as Ascend's Pipeline series include analog telephone support as well.