Skip links


Our work speaks for itself, so your business can communicate with the rest of the world.


Adtel understands voice technology and can help you implement a solution quickly and without major downtime.  We provide reliable, scalable and user friendly products custom designed to fit your business requirements.  Our offerings include Digital and VoIP telephone systems, Hosted & Cloud telephone systems, Unified Communications such as Voice Mail to Email, Call Recording, Android and iPhone apps, CRM integration, Contact Center and Web Conferencing.


Time is precious and most people don’t have time to learn how to fix aging or nonfunctioning data network devices.  Adtel can install and maintain a variety of data network devices such as servers, desktop computers, routers, firewalls, managed switches and wireless networks. In addition, Adtel can run a 48 hour network analysis to find issues that may be causing poor performance and help with a resolution for these issues.


Whether it be adding a single voice or data network cable or installing an entirely new voice and data cable infrastructure, Adtel can meet your needs.  We can install a variety of cable types including Fiber, Cat5e/6/6a, Coaxial, Speaker and Paging.  In addition, we can test and certify your current network cable infrastructure to ensure your data cable is performing as expected.


Adtel can help you reduce the cost of your phone and internet bill. Even a small savings will add up over time. We offer business internet service using coax or fiber and business phone service using Analog lines, PRI or SIP trunks. Adtel can also help you save money by networking multiple locations together for a cost savings on monthly phone bills.


We know that technology can be confusing and there are a lot of terms that get tossed around when it comes to telecommunications technology.  Terms such as VoIP, Hosted, UC, UCaaS, MPLS, SD-WAN, and Cloud are very familiar to us.  We can be your guide through this and assist with any questions you might have.


When we service your business,  we’re giving you much more than just hardware. We’re giving you the services and systems San Antonio businesses need to thrive, which includes: Discounted labor related to moves, additions and changes to your system, Free advance replacement of equipment, Labor related to service issues,24/7 emergency service calls, Remote or telephone support, Ongoing training, Consulting services related to your communication 
system or carrier Services.

Products We Use

NEC Phone Systems

Adtel installs, maintains and services the NEC family of products which includes the IPK, SV8100/SV8300/SV8500, SV9100/SV9300/SV9500, DSX, Aspire, and SL series communications systems.  These premise-based VoIP and Digital solutions are highly reliable and designed to fit the needs of the SMB market all the way up to Enterprise size deployments.

Toshiba Phone Systems

Toshiba Telecom is now owned by Mitel Networks.  Adtel can and will continue to service and maintain the DK, CTX, and CIX platforms.

Star 2 Star

A fully redundant cloud voice solution which provides a full suite of features.  These features include mobile applications for iOS and Android devices, CRM integration and Unified Communications.  It can also reduce provider costs through SIP trunk services.  This solution offers 99.999% reliability with built-in Quality of Service (QOS).  Let us show you why this cloud solution stands out from the rest.