Nortel NT8B27 is a business telephone suitable for professionals who are in positions where centralized answering is the norm. The new version of the phone is smaller and has a two color design. Being more compact it will occupy only a small space from the table of a busy executive. However, in order to install and operate it you need its manual. Normally it is provided in the box in case you buy a brand new one. If you lost your manual or if you bought a used phone, you will be compelled to download it from the internet. If that is the case, download Nortel NT8B27 manual here.