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


Business VoIP Phone Systems and More

Office Telesystems carries top brand name business VoIP phone systems and related equipment, including cloud and premise based VoIP phone systems, digital phone systems, cabling and more... [Read More...]

Service, Support, Maintenance Agreements

Office Telesystems offers service, support and maintenance agreements on VoIP phone systems and related products. This includes our cloud and premise VoIP phone systems, audio visual [Read More...]

We Specialize in Many Different Industries

Office Telesystems has serviced clients in many different industries, including: medical, assisted living, hotel and motel, manufacturing and distribution, real estate industry and more! [Read More...]

Read Our Great Client Testimonials

Read Office Telesystems client testimonials about our telephone system installations, service and support, including new system installations and more. Be sure to Google us for more.. [Read More...]

VoIP Business Telephone Systems and More Dallas Fort Worth DFW area and Nationally

Office Telesystems has provided the latest cloud and premise based VoIP PBX phone systems, digital telephone systems and more for Dallas, Fort Worth, the DFW area and enterprise business nationally! With roots going back over 30 years now, let our experienced sales and support team assist you with all of your unified communication (UC) needs. Along with business telephone systems, Office Telesystems also provides structured voice, data, video and fiber cabling,  overhead paging systemscall management softwarecall recording solutionssystem relocationssystem repairmaintenance agreements and more, installed by our expert, certified technicians. We've included new (UC) products, service and support to include audio visual systems, IT network equipment and IT support. According to UC Today, the global market for unified communications is expected to hit a value of 57 billion by 2024! Let Office Telesystems take your business into this new era of unified communications, UCaaS, CCaas and collaboration, with support that is second to none!
We provide expert installation and service on all products we offer. VoIP and digital phone system product lines include NEC (including the NEC SV9100 Hybrid VoIP phone system and NEC SL2100!!), Avaya IP Office,
Mitelcloud phone systems and cloud PBX from Netfortris Fonality and more!

As seasoned experts in the industry, we understand that customer service and support is even more important than just the right product. When it comes to a new VoIP phone system or any product we carry, the right product that solves our customers' problem is expected. Service and support after the investment 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. When it comes to phone systems options, some companies offer only 1 or 2 choices, trying to fit a square peg in a round hole so to speak. At Office Telesystems we offer multiple brand and design options, with flexibility, customization and choice for your specific business needs. This philosophy applies to all products and services we offer. 

We are positioned to offer a complete unified communications or UCaaS solution for small businesses to large, enterprise business in Dallas, Fort Worth and the DFW metroplex, with regional and national services available.  
Office Telesystems continually evaluates our product lines to offer you the very best voice, network and video solutions for your business. Our product lines are carefully chosen to provide the latest technology, reliability, ease of use and return on your investment, with a certified team of technicians to ensure your equipment is installed right the first time!

Cloud VoIP phone systems (also known as Hosted VoIP or Cloud PBX) from Netfortris/Fonality are business grade cloud VoIP design. Specialized applications for all phone system designs we offer include hotel/motel solutions, medical and assisted living facilitiescall center phone systems and CCaaS as well. Network equipment includes wireless applications, IT support, VoIP applications, audio visual systems, network switches and other specific network products and services. Still have that 7+ year old PBX phone system in your office? Used and refurbished business phone systems and service offered include Samsung, Avaya/NortelAT&T and Lucent Partner, Nortel BCM, Avaya/Nortel Option 11, 21, 61, 81, CS1000VodaviWIN and other major manufacturers. Overhead paging systems are also one of our specialty applications for manufacturing and distribution facilities, schools and office spaces large and small.
We handle VoIP phone systems and related equipment from 3-30,000 endpoints or more in single and multi-office implementations in premise based VoIP system or cloud phone system design. Nationwide services are available. Our experienced 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 unified communications products we carry, such as 
Call Management SoftwareCall Recording systemsOn Hold Marketing products and more!

Maintenance agreements for phone systems, IT Networks or other equipment representing a flexible, defined warranty period on equipment and service are also available. Installations, service and repairs are completed by our expert technical staff. Our technicians are certified on the major brands we sell, resolving issues thoroughly and quickly, costing you less overall for service and installation. Let Office Telesystems handle all of your unified communications and voice technology needs. For VoIP telephone systems and more in Dallas county and Dallas area suburbs call (972) 484-4900. For Fort Worth area VoIP telephone systems and other products and services call (817) 529-1700. Services provided nationally as well! We've recently moved into a new, larger facility with quick access to anywhere in the DFW area!

Looking for a new exciting career or to continue it? Check out our careers page today!

You can learn more about our products and services we offer at our Blog Page, along with instruction on VoIP network design and more!


Kari's Law Compliance is Now a Federal Law, Ray Baum's Act to take effect soon. Act Now!

Is your phone system in compliance with Kari's Law? It is now a federal law for new multi-line telephone systems 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 here. Signed into law in 2018, the law went into effect on February 16, 2020.

Ray Baum's Act requires outbound caller ID on new phone systems to provide address, floor, room or suite number for 911 calls. Affected by Ray Baum's Act include enterprise companies, multi office companies, campus for schools and universities, hospitals, hotels, retail, financial and large warehouses. 

We can help. Contact our office today and get compliant if you are not!  Act now!  All new phone system installations by Office Telesystems include Kari's Law compliance and Ray Baum's act compliance.

See our Blog Page

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