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TeleDynamics Think Tank

Gettin’ jiggy with jitter

Posted by Daniel Noworatzky on Apr 1, 2020 10:49:00 AM

Jitter is one of the most common causes of substandard voice communications over IP networks. This article provides an overview of jitter and how it influences voice applications, as well as methods for resolving it on your networks.

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Topics: QoS, VoIP, Troubleshooting, Network Design, Unified Communications

How to use SNMP to monitor your VoIP network

Posted by Daniel Noworatzky on Mar 4, 2020 10:47:00 AM

Wouldn’t it be great to have superhero X-ray vision that allows you to understand, in a single glance, what is going on with the voice traffic on your network? In fact, it is possible to do so using the Simple Network Management Protocol (SNMP). In this article, we take a look at this protocol and highlight the special features it has up its sleeve to help you with your VoIP monitoring needs.

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Topics: QoS, VoIP, Troubleshooting, Voice Protocols

The advantages of SDN for VoIP

Posted by Daniel Noworatzky on Oct 23, 2019 10:50:00 AM

Software-defined networking (SDN) is changing the way networks are managed and designed. In this article, we take a look at how an SDN approach can be of great benefit to VoIP and video telephony deployments in particular.

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Topics: QoS, Trends, Productivity, Network Design, Unified Communications

How to optimize your Wi-Fi network for VoIP

Posted by Daniel Noworatzky on Sep 11, 2019 10:47:00 AM

Many administrators resist implementing VoIP over Wi-Fi, often citing security and quality concerns. The truth is that if implemented correctly, voice can be safely and reliably deployed on a wireless network. This article examines some best practices for optimizing voice over Wi-Fi (VoWi-Fi).

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Topics: VoWi-Fi, QoS, Wireless, Network Security, Network Design, Wi-Fi, Unified Communications

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: QoS, VoIP, Routers, Network Design, Switches

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

EdgeMarc SBCs that scale with growing businesses

Posted by Daniel Noworatzky on Oct 26, 2017 10:00:00 AM

Review of the EdgeMarc 2900a and 2900e Enterprise Session Border Controllers

Edgewater Networks has added to its line of enterprise session border controllers (eSBCs) with its EdgeMarc 2900a and 2900e models. These are designed to enable enterprises and service providers to future-proof their SIP trunking and Unified Communications (UC) deployments. With built-in mechanisms for both QoS and security, they provide intelligent mechanisms allowing for both hosted PBX services as well as SIP trunking applications.

They have several features that differ from other EdgeMarc SBCs.

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Topics: QoS, VoIP, SIP, Peripherals, Network Security, Network Design, Product Review

Give superpowers to your WAN through software management

Posted by Daniel Noworatzky on May 3, 2017 3:44:00 PM

An SD-WAN can be up to 2.5 times less expensive than traditional WAN architecture.

 

One of the most challenging situations for networking professionals over the years has been how to interconnect remote sites and branch offices so users at all locations can enjoy the same quality of network and telephony services in a secure and timely manner. One way to do this is to duplicate all services at each location. However, this can become administratively unwieldly, not to mention prohibitively expensive.

The solution is the use of wide area networks (WANs), where centralized services like voice and data reside at headquarters and can be provided to the remote users as if they were all physically located inside the headquarters’ LAN (local area network). In this article, we look at the different ways to deploy WAN, as well as the problems solved and business benefits to be gained by using software-defined WANs (SD-WANs).

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Topics: QoS, Total Voice Solution, Trends, Network Design, Cloud

What is VoIP… really?

Posted by Daniel Noworatzky on Apr 5, 2017 2:51:00 PM

Last week, we touched on some of the technological advances that have allowed VoIP telephony to surpass the PSTN in both quality and reliability.

Yet, even though VoIP has been around for two decades, there are still some misconceptions about what it really is. A lot of people think of VoIP as a technology that allows placing phone calls over the internet. Although this is true, such a narrow definition encompasses only a fraction of the functionality of VoIP.

The unfortunate consequence of this misperception is that VoIP is often associated with low quality and best-effort services that offer low cost or free voice calls over the internet. Those familiar with these services have experienced the frequent disconnects, jitter and stuttering on the line characteristic of this type of service. As a result, VoIP has erroneously been associated with an unreliable user experience.

The truth is, VoIP is much more (and better) than just voice over the internet.

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Topics: OTT VOIP, QoS, Business Telephone System, VoIP, SIP, mobile

These facts about VoIP may surprise you

Posted by Daniel Noworatzky on Mar 29, 2017 3:40:00 PM

The most recent FCC Voice Telephone Services report, published in November 2016, states that two thirds of businesses in the United States are still using switched access telephone lines (PSTN or POTS). The reasons they haven’t yet migrated to VoIP (voice over internet protocol) are varied. One of the most prevalent myths about VoIP is that the quality is not as good or reliable as that of traditional telephone lines. The truth, however, is that VoIP technology has evolved to a point where the audio quality is generally as good if not better than analog lines.

Here we list some of the technological developments that have allowed VoIP to surpass even PSTN voice quality, some of which may surprise you!

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Topics: QoS, Business Telephone System, VoIP, Trends

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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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