This telephone is designed to be used with an analog telephone line. In order to use the phone on an ISDN line, you need to use an ISDN/Analog adapter. If you have questions regarding which adapter should be used, please contact your ISDN provider.

The information on this page applies to the following models: CD1901B/55 , CD1912B/55 , CD1811G/NL . Click here to show more product numbers  ›