For Everyday Use by Everyday Users
The entry-level D40 supports one or two lines, and is designed for the broadest range of use cases, where employees are occasionally on the phone.
Simple and Inexpensive
At $129 MSRP, the D40 is affordable and useful for a broad range of applications; it offers four feature keys, for holding a call, messages, redial and transfer functions.
At-a-Glance Speed Dial for the Middle of the Market
The midrange D50 supports up to four lines and includes a panel with 10 rapid-dial/busy lamp field keys; the D50 is designed for workers who are on the phone for much of their day.
A Serious Phone for Serious Work
At $179, the D50 combines flexibility with affordability, without presenting the user with more features than desired; it adds feature keys for conferencing and information to the basic set.
Digiums D70 Pulls Out the Stops
The top-of-the-line D70 supports up to six lines, but adds an LCD screen to the rapid-dial/busy lamp keys; this allows users to page through their most important contacts, up to 100.
A Power Phone for Powerful People
The $279 price tag on the D70 means that most organizations will be buying these for executives and senior managers, or extremely specialized roles in the organization.