Wednesday, January 29, 2020

Office Telesystems Product Offerings

Office Telesystems Products and How We Chose Them

Office Telesystems has carefully chosen the very best Unified Communications and UCaaS products on the market today, including new cloud/hosted VoIP, on premise VoIP and digital phone systems, audio visual systems, overhead paging systems, used phone systems, structured voice, data and video cabling and many more products designed to enhance communications in your office. We've recently expanded our product lines with audio visual and enhanced overhead paging options to enhance your voice communications to a new level. Our product lines are under constant evaluation to maintain the standards you deserve and expect with today's technology.

Our product lines have been chosen to provide a combination of the latest technology, proven reliability and eliminating issues with equipment obsolescence.  Well known product names such as NEC, Avaya, Mitel, and NetFortris/Fonality cloud VoIP are all phone system products focused on providing solutions that offer rapid ROI, low total cost of ownership and long term investment advantages. John Cornwell, CEO of Office Telesystems, had this to say about our product lines: "After 35 years in the industry, I've worked with just about every equipment manufacturer in telecommunications. I've seen a few come and go as well. Our product lines provide our customers a reliable solution poised to keep up with new technology, provide long term investment benefits and low total cost of ownership. Today's Unified Communciations implemented with UCaaS and our premise based offerings are tools for enhancing productivity and profitability, an investment in your business."  

Though we carry several products that fit Mr. Cornwell's statement, he also knows that customer service is what wins the day with today's customer. "Providing a great product and great support after the sale is what today's business executive and IT department is looking for". Providing both is top priority at Office Telesystems!

Thank you for your time! Office Telesystems serves the Dallas Fort Worth area, and nationwide for enterprise business and hotel motel. Visit us at or call toll free (844) 544-4900, (972) 484 4900 in Dallas or (817) 529-1700 in Fort Worth for more information.

SIP Trunk Service

SIP Trunks are a VoIP phone line technology which can give you great sound quality and new features not available with analog lines or even PRI service. Office Telesystems can provide SIP trunks along with high speed bandwidth for your office

SIP trunks are a VoIP delivered call path designed to provide reduced cost and more features for your phone system. Cloud VoIP phone systems utilize this technology to provide voice services from their cloud server to a cloud VoIP customer. Premise based phone systems of today can accommodate SIP trunking as well, which can be delivered to your office through your internet service as a bundled service. Here are some advantages to SIP trunk service from your voice line provider:
  • Improved clarity of calls
  • Save money on your bill in most cases
  • Better conference call sound quality, 3 or more parties
  • Direct dial numbers for all extensions are available with SIP trunks
  • SIP can provide 1 to 250 call paths or more for all phone numbers
  • Modify your outbound caller ID to your callers to whatever call back number you want to show
  • Set up your line access on your desktop endpoints however you would like
  • Along with call reporting software, utilize DID numbers for ad campaigns to help determine which media is the most valuable.
  • Switching your PRI or analog lines to SIP may save you enough money monthly to justify a lease payment on a new premise based VoIP system in many cases. SIP comes with your cloud based VoIP system.

Office Telesystems works with many of the major voice carriers in the area and can help you implement SIP trunking on your premise based VoIP system, or provide a cloud based VoIP solution for your offices. Talk to one of our expert sales team to find out which solution is the best fit for your company.

Thank you for your time!

Codec Types

What's a Codec?

A codec, which stands for coder-decoder, converts an audio signal (your voice) into compressed digital form for transmission (VoIP) and then back into an uncompressed audio signal for replay. It's the essence of VoIP. Codecs vary in the sound quality, the bandwidth required, the computational requirements, etc. Each service, program, phone, gateway, etc., typically supports several different codecs, and when talking to each other, negotiate which codec they will use.
Little Known Fact - You can assign a different codec to individual phones. Your staff can use medium quality/low bandwidth G.729 codec while the boss and legal department uses the superior quality/heavy bandwidth G.722 codec.

Common VoIP Codec Protocols

G.729  G.729 is a codec that has low bandwidth requirements but provides good audio quality. This is the most commonly used codec in VoIP calling and has a MOS rating of 4.0
G.711 G.711 is a codec that was introduced by ITU in 1972 for use in digital telephony. With only a 1:2 compression and a 64K bitrate for each direction (128K plus some overhead), it is best used where there is a lot of bandwidth available. G.711 has a MOS rating of 4.2
G.722 G.722 is a high bit rate (48/56/64Kbps) ITU standard codec which, because it is of even better quality of the traditional public switched telephone network (PSTN), it can be used for a variety of higher quality speech applications. This standard also requires an adequate amount of bandwidth and usually rates a 5.0 on the MOS scale.


There are many codecs out there, some like the G.711 are royalty free, others require licensing (which is often included in the gateways). Some that we haven't mentioned here drive the wholesale movement of voice traffic among the carriers and are used for specialty applications. And to make it a bit more confusing, they all contain variations within their own specification.

How to Decide? 

The codecs that provide the best quality consume the most data bandwidth, thus there is a trade-off that you need to consider.  The easiest way is to ascertain, on a phone by phone basis, whether you want the voice conversation to be:
  • Slightly less then the quality of an excellent cell phone call (G.729)
  • Equal to the quality of an analog land-line today (G.711)
  • Better than the public switched telephone network for voice critical applications (G.722)