Purposefully designed and engineered to deliver the best in business communications
For 34 years ESI has worked to perfect the desktop phone. Anyone can sell you a generic phone with their phone system, ESI phones are uniquely integrated with our solutions to work together in unison.
Featuring a four inch color display, the dPhone4 provides clear status indication for thirty-six programmable feature keys, enabling quick access to the extensions, cell phone numbers, and feature keys you need most. The dPhone4 is loaded with advanced capabilities yet incredibly intuitive to use.
The dPhone4 is the only digital business phone on the market with a color display and delivers a powerful set of features to improve the end user experience:
- Purposefully Designed: ESI phones have been purposefully designed to work with ESI solutions and deliver the best communication experience.
- One Touch Features: No crazy codes to remember for basic phone features, ESI has made it one touch simple for call recording, transfer, call park, conferencing, voice mail and do-not-disturb.
- Intuitive To Use: Loaded with advanced capabilities yet incredibly intuitive to use with features you use every day, all at your fingertips.
- Technical Support: We make it easy to find information on how to use your phone features. With a built-in HELP button, assistance is at your fingertips and backed by a team of support specialists.
Our goal is to maximize productivity for you and your staff. Users who need assistance in programming the phone also benefit from the HELP key that guides them through set-up, allowing them to spend less time programming and more time focusing on the task at hand.
Features and Specs
- Digital Network
- Twelve (12) Programmable Keys
- Dedicated Voicemail Key
- Dedicated Help Key
- 2-line, 32-character Backlit Display
- Speakerphone
Compatible Systems

ESI IP Server 900
ESI IP Server 900 is a unified communications system combining the reliability of an on-premises phone system with the flexibility of network connectivity.

ESI Communications Servers
ESI Communications Servers give you the flexibility of both digital functionality and IP-to-the-desktop in any combination.