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TeleDynamics Think Tank

Daniel Noworatzky

Chief Technology Officer, TeleDynamics

Recent Posts

How to troubleshoot voice quality problems in VoIP phone systems

Posted by Daniel Noworatzky on Nov 21, 2018 10:46:00 AM

How to deal with jitter, packet loss, latency and signaling delay

Some of the most difficult issues to troubleshoot on a network are failures resulting in a degradation of service, a slowdown in speed, or intermittent connectivity, as opposed to a complete disruption in service.

When it comes to troubleshooting issues involving VoIP, this becomes even more acute. Intermittent, low-quality, and metallic-sounding voice, as well as erratic connectivity between VoIP end devices, are all network problems falling into this difficult-to-diagnose category.

Almost all such malfunctions are due to a faulty implementation (or lack thereof) of quality of service mechanisms. In this article, we will look at some of the most common failures of this type, what they sound like, and what should be done to verify and rectify the problems.

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Topics: Troubleshooting, SIP, VoIP, Business Telephone System

Introducing the Panasonic Mobile Softphone

Posted by Daniel Noworatzky on Nov 14, 2018 10:53:00 AM

Product Review

 

Panasonic has taken advantage of the incredible flexibility that IP telephony provides by introducing its new Mobile Softphone. It integrates with Panasonic IP telephony systems to provide versatile and adaptable unified communication services, anytime, anywhere.

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Topics: Product Review, Productivity, Mobility, VoIP, Peripherals

Quality of Service must-haves for converged networks

Posted by Daniel Noworatzky on Nov 7, 2018 10:49:00 AM

IP Telephony features are not always “plug-and-play.” Rather, they must be configured to function properly. This is equally true when dealing with quality of service (QoS) on a network that transmits both data and voice (i.e., a converged network).

Companies commonly find that when they install their VoIP system on a preexisting data network, it works great at first. Days or weeks later, however, users complain of poor voice quality and intermittent disconnections. The network has not changed, so what’s going on?

In this article, we’ll see why QoS is a fundamental part of your network design for voice, and examine five configurations that should always be employed to achieve high-quality voice on a converged network.

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Topics: Switches, Network Design, QoS, Routers, VoIP

Grandstream’s GXP1610 and GXP1615: Big feature set, small price tag

Posted by Daniel Noworatzky on Oct 31, 2018 10:51:00 AM

Product Review

 

Thanks to VoIP technology, it’s the software, not the hardware, that takes a starring role in a business telephony system. And the sophistication of the software can turn even an entry-level endpoint into a full-service telephony device with the robust feature set that in the past was only available on more expensive phones. For micro- and small businesses that want high-end functionality on an entry-level endpoint with a small price tag, Grandstream has you covered with the GXP1610 and GXP1615 1-line IP phones.

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Topics: Grandstream, SIP Phones, VoIP, Product Review

Grandstream’s GWN7000 series Wi-Fi access points and Gigabit router

Posted by Daniel Noworatzky on Oct 24, 2018 10:51:00 AM

Product Review

 

Since launching its GWN7610 Wi-Fi access point in 2016, Grandstream has grown its GWN Series to include a range of access points plus a Gigabit VPN router to offer a complete wired and Wi-Fi solution. In addition to the GWN7610 enterprise access point (“AP”) we reviewed in 2016, Grandstream has since launched the GWN7600 mid-range AP, the GWN7600LR outdoor long-range Wi-Fi AP, and the FWN7000 enterprise multi-WAN Gigabit VPN router. We take a look at the full series in this article.

 

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Topics: Wi-Fi, Product Review, Routers, Grandstream, Wireless, Mobility

QoS for VoIP networks: IntServ versus DiffServ

Posted by Daniel Noworatzky on Oct 17, 2018 10:48:00 AM

Your customer using a legacy phone system decides to switch to voice over internet protocol (VoIP). They install an IP PBX and buy some IP phones. Great, they’re all set, right? Wrong. Without configuring their data network for quality of service (QoS), they will experience a severe deterioration in voice quality and may regret making the decision to switch. Yes, the IP PBX and the IP endpoints will already be configured for QoS. But what about other parts of the network like the pre-existing routers, switches and firewall? All it takes is one missing link for the whole system to be compromised.

QoS is a big topic. In this article, we’ll look at two main approaches to QoS: IntServ and DiffServ, their strengths and limitations, and when to use which one.

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Topics: Switches, Network Design, Routers, QoS, VoIP, Business Telephone System

Customizing a VoIP deployment for your multisite customer

Posted by Daniel Noworatzky on Oct 10, 2018 10:48:00 AM

 

Over the past few weeks we’ve looked at different ways to structure multisite VoIP deployments. The truth is, each business is unique and sometimes a customized architecture is needed. In this article we look at a hybrid solution. A hybrid call processing deployment allows you to craft a solution that is perfectly tailored to a specific customer’s needs.

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Topics: Network Design, Total Voice Solution, Business Telephone System, VoIP, Customer Service

How and when to deploy distributed call processing in a multisite environment

Posted by Daniel Noworatzky on Oct 3, 2018 10:54:00 AM

Last week, we discussed centralized call processing and its benefits and potential pitfalls. In this article, we’ll examine another type of telephony infrastructure design for multisite enterprises: distributed call processing.

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Topics: Business Strategy, Network Design, Business Continuity, Total Voice Solution, Business Telephone System, VoIP

How to set up centralized call processing in a multisite enterprise

Posted by Daniel Noworatzky on Sep 26, 2018 3:53:00 PM

Enterprises with multiple sites have a variety of options when it comes to their IP telephony infrastructure. Which setup will best meet their needs depends on the answers to questions such as:

  • Where should the call processing take place?
  • Where should calls to the PSTN exit the network?
  • Where should incoming calls connect to the corporate network?

These decisions depend on the nature of the underlying network infrastructure that will carry the IP telephony services, as well as other considerations such as the location of the remote sites, the dial plan, and cost.

In this article, we discuss the centralized call processing model and how to avoid common complications with its deployment.

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Topics: Gateway, Network Design, IP PBX, VoIP, Business Telephone System

What's new in Yealink’s W53P IP DECT phone and WF50 Wi-Fi Dongle

Posted by Daniel Noworatzky on Sep 19, 2018 3:55:00 PM

Product Review

Last week, Yealink launched the W53P DECT IP phone package and the WF50 Wi-Fi dongle for IP phones. These products further enrich Yealink’s suite of wireless enterprise solutions. We take a look at both of these products in this article.

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Topics: Yealink, Wireless, DECT, Cordless, Mobility, Product Review

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Welcome to our Think Tank

In this blog you'll read our thoughts on business telephone systems. While a lot has changed in telecom since TeleDynamics was founded in 1981, we remain as committed as ever to delivering the best customer service in the industry.

If you would like elaboration on a specific topic, please let us know in the comments section.

Happy reading and thanks for stopping by!

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