CALL 972.484.4900
972.484.4900 (DALLAS) 817.529.1700 (FT. WORTH)


Business VoIP Phone Systems

Office Telesystems carries the top brand name business phone systems on the market today, including cloud VoIP phone systems, premise based VoIP and digital phone systems, voice and data cabling and infrastructure, PRI, SIP VoIP service, fiber services and much more. We feature these premier … [Read More...]

System Service and Support

Office Telesystems offers service and support for every phone system and all peripheral products we offer. This includes support for our cloud phone systems, premise based VoIP phone systems, digital phone systems, call management software, call recording systems, … [Read More...]


Office Telesystems has serviced clients in many different industries, including: healthcare, assisted living, hotel and motel, insurance companies, advertising marketing firms, real estate industry, auto dealerships, assisted living, legal … [Read More...]


Read Office Telesystems client testimonials about our telephone system installation and service, including new system installations and more. More references are available upon request. “I was impressed with the expertise of the Office Telesystems sales and engineering staff … [Read More...]

Office VoIP Telephone Systems for Business | Dallas Fort Worth DFW Area Nationally

Office Telesystems provides cloud and premise based VoIP and digital phone systems for Dallas, Ft. Worth, DFW area, regionally and enterprise business nationally. With company roots going back 30 years now, we understand that customer service is even more important than the right product. When it comes to a new phone system, the right product with the latest technology and features available is expected. Service and support are our customers' major concerns. Our goal is to provide every customer prompt, courteous and professional service along with efficient implementation and support of our customers product choice. Some companies offer only 1 or 2 phone system options, trying to fit a square peg in a round hole so to speak. At Office Telesystems we offer multiple options, offering product design options and flexibility in choice for your specific business needs. 
We offer business telephone systems for small business to enterprise class, along with other voice technology products for Dallas, Fort Worth, the DFW metroplex, regionally and nationally. This includes the latest in Voice Over Internet Protocol (VoIP) phone systems in cloud or premise based phone system design, along with new and refurbished digital phone systems. 
We also provide voice/data/video cabling and cabling infrastructure, installationsystem relocationssystem repair, voicemail, call management and overhead paging systemscall recording solutionsmaintenance contractsservice and consulting. VoIP and digital phone system product lines include NEC (including the NEC SV9100 Hybrid VoIP phone system and NEC SL2100!!), SamsungAvaya,
Mitelcloud phone systems from Netfortris Fonality and more! Office Telesystems continually evaluates our product lines to offer you the very best voice technology solution for your business. Our product lines are carefully chosen to provide the latest technology, reliability, ease of use and return on your investment.

Cloud phone systems (also known as Cloud or Hosted VoIP) from Netfortris/Fonality are business grade cloud VoIP design. Specialized applications include hotel/motel solutions and call center phone systems as well. Network Services include Wireless applications, IT Support, VoIP applications, network switches and other specific products and services. Used and refurbished business phone systems offered include Avaya/NortelAT&T Lucent Partner, Nortel BCM, Avaya/Nortel Option 11, 21, 61, 81, CS1000VodaviWIN and other major manufacturers.
We handle phone systems from 3-30,000 stations or more in single and multi-office implementations and in premise based or cloud phone system design. Nationwide services are available. Our sales staff is trained to evaluate your business model and find the appropriate equipment and services to maximize productivity and profitability for your business. Check out our Products page for a long list of other voice products we carry, such as 
Call Management softwareCall Recording systemsOn Hold Marketing products and more! Maintenance contracts representing a flexible, defined warranty period on equipment are also available. Installations, service and repairs are completed by our trained and experienced staff. Our technicians are certified on the major brands we sell, resolving issues quickly the first time, costing you less for service and installation. Let Office Telesystems handle all of your unified communications and voice technology needs. Contact us today! 972 484 4900 in Dallas County or (817) 529-1700 in Tarrant county.

 Kari's Law Compliance is Now a Federal Law as of 2/16/18

Is your phone system in compliance with Kari's Law? It is now a federal law for your multi-line telephone system to support this dialing feature. Kari's Law requires direct access to 9-1-1 service without the user having to first dial an initial number, digit, prefix or other access number or code before dialing 9-1-1.
Learn more about 
Kari's Law. We can help. Contact our office today and get compliant! Compliance with Kari's Law was required by September 1, 2016 by the state of Texas and is now federal law as of 2/16/18. 

Office Telesystems is growing! Check out positions available at our Careers page.

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