Get to Know the ESI Phone System Today
ESI Intelitouch™, the unique, seamless handoff between the phone system and desktop or mobile interface that only ESI can provide, delivers a truly unified communications experience. Call Recording + Record calls from your mobile device and save them directly to your company’s network. Call Management +. Note: The Apple Mobile Device USB Driver has not been updated. If you have installed the Apple Mobile Device USB Driver and enabled the services, but still get 'Device not detected' error, this problem may be caused by Apple Mobile Device USB Driver has not been updated. To fix it, right-click on on My Computer/This PC icon on the desktop.
The ESI phone system, made by ESI Estech Systems, offers a variety of highly personalized telecommunications features, utilizing SIP (session initiation protocol) technology. The includes voice and video calls utilizing internet telephony, as well as instant messaging using IP networks.
ESI’s IP phone systems allow your business to stay connected with customers and employees wherever they may be around the world. For over twenty-seven years, ESI has been innovating new ways for businesses to stay connected, emphasizing the desktop phone as the center of your business telecommunications system.
ESI Phone System Features
Purposely Designed
One Touch Features
Intuitive To Use
Simple Support
Lifetime Warranty
Additionally, ESI Estech Phone Systems are also built for ESI Cloud PBX solutions, integrated with ESI Intelitouch, providing a real-time communication solution that reaches all ends of your network simultaneously.
ESI’s high performance phone systems include built in automated attendants, programmable call forwarding, automatic call distribution, blue tooth connectivity, phone line support and even automatic door lock controls, with visual call display and voicemail set as standard.
ESI Mobility – ESI Ditto
ESI’s business phone systems feature an array of mobility applications that allow easy access to employees with reducing their productivity. The ESI Ditto application is perfect for employees whose job does not allow them to remain at an office desk to perform their work. ESI mobile applications allow employees in the field to turn their smart phones into office phones. This allows you the ability to transfer and redirect their calls, as if they were in the room right next door.

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The ESI Ditto application ensures productivity, security, performance and privacy.
ESI Ditto Features
Intelligent Integration
Call Recording
Call Management
Aggreggated Contact
Mobile Device Support
Single Number Reach
Voicemail Notification
If you are a small to medium size business with unique communication needs, let us demo a ESI phone system for your business.
Commercial Telephone Systems is a certified in ESI Communications Systems which is able to provide phone maintenance for this system.
Introduction
The ESI-50 Communications Server is a powerful tool around which you can build your organization’s entire telecommunications strategy — and you don’t have to know it all in advance.
That’s because the ESI-50 can be a traditional digital business phone system, a fully standards-based IP telephony system, or any mix of the two. The choice is entirely yours, and the mix can easily change when your needs do.1
Ready to shoulder the load for your business
The ESI-50 Communications Server combines multiple first-rate, feature-rich systems into one tightly integrated unit:
- Business phone system
- Voice mail
- Automated attendant with six levels and 100 branches
- Messages-on-hold
- Enhanced Caller ID2
- Automatic call distribution (ACD)
- Intelligent Call Forwarding™3
- Optional Windows®-based VIP family of communication management tools
- Optional ESI Presence Management
- Optional ESI Media Management
- Optional ESI Bluetooth® Voice Integration
- Network-based VoIP telephony1
Properly configured by your Certified ESI Reseller, the ESI-50 can handle your heaviest communications needs. In addition to the features mentioned above, the ESI-50 includes:
- Digital stations, IP stations1 (including SIP), or any combination thereof
- T1/PRI support 4
- Massive voice message storage
- Sophisticated voice mail features
Powerful — but friendly
Despite its long list of features, the ESI-50 Communications Server — thanks to famous ESI ease-of-use — is a phone system you’ll find friendly. It says, “Good morning.” It teaches you how to use and program it. It reminds you to change your personal greeting after a trip. And it stands by, ready to assist you whenever you need help. There are several different models of ESI desktop phones. Each is a compact, attractive addition to any desk, designed to simplify your telecommunications. Here are just two examples:
- The display is large and easy to read; that’s even more true for the backlit display you’ll find on most models.
- The dedicated function keys (so you don’t have to memorize codes) give you more ease of use, even with the ESI-50’s enhanced capabilities.

On the go?
Mobile Phones Uk
If you’re frequently on the move throughout your workplace, an ESI Cordless Handset II is the easiest way to stay in touch with other system extensions, not to mention your voice mail. The ESI-exclusive Quick Switch feature makes it easy to go from desktop extension to the Cordless Handset II at a moment’s notice; just press a key. Or, if you’re “tied” to your cell phone, ESI Cellular Management — part of ESI Bluetooth Voice Integration — simplifies your communications through the power of fixed/mobile convergence.
Easy to choose; easy to use
The ESI-50 is an easy choice over other business communications systems in its capacity class. Its ease of use and feature-richness reduce staff frustrations, increase productivity, and enhance your corporate image. And the ESI-50’s unique integration provides call-processing efficiency and cost savings that previously were impossible.
Note: The entry-level ESI-50L has some of the features listed above and, if your business requires more, may be upgraded to an ESI-50. In general, the ESI-50L doesn’t support features that depend on ACD, IP, or high-bandwidth lines.
1. Some IP-related features require optional equipment. Current ESI desktop IP phones and ESI Cordless Handset II (as well as IP models of legacy ESI Cordless Handsets) not for use with ESI systems introduced prior to 2007. ESI-50L must be upgraded to an ESI-50 to provide any IP support.
2. Requires Caller ID service from your telephone service provider.
3.Requires use of ISDN Primary Rate Interface (PRI) line (not supported by ESI-50L).
4. ESI-50 doesn’t support T1 lines. ESI-50L supports neither T1 nor PRI lines.