How to troubleshoot problems arising from blocked ports, ACLs, firewalls, NAT, and more

For networking professionals, one of the most difficult things to deal with is troubleshooting VoIP issues, because the troubleshooting process for VoIP is not always intuitive. Answers to the questions, “What could be wrong?” and “What should I check first?” are not always readily apparent.

To aid your troubleshooting and allow you to take some meaningful actions before reaching out to your telco or vendor help desk, we’ve listed the most common VoIP problems you may face, as well as their causes and solutions. 

One of the most common matters we discuss with customers on our support calls is network security – specifically, how to lock down SIP Trunks, IP PBXs, SIP phones, and routers from hacking. Here we review different ways hackers can break into your voice network and the steps you can take to secure your system.

How you connect to the internet will impact your VoIP phone system

Because SIP trunks leverage the WAN technology used to connect to the internet, it is imperative to understand how the choice of WAN technology will impact the functionality of the SIP trunk. There are different ways to connect to the internet, and each has implications for voice traffic.

In this article, we discuss the main considerations to take into account when choosing between MPLS, metro Ethernet, LTE and SD-WAN.

If you have customers that have not yet migrated to VoIP and are thinking about making the switch, this would be a great time to do it. According to the FCC, VoIP telephone subscriptions in the U.S. have been growing at a compound annual growth rate of 10% since 2013, and retail switch access has been declining by 11% annually during the same period. At that rate, VoIP subscribers now outnumber switched access customers, and ISDN connections are quickly sliding into obsolescence. SIP trunking is becoming the standard for PSTN connectivity.

To ensure a smooth transition, start by helping your customers answer these four basic questions to set them up for success.

New Eastern Management Group study reflects input from more than 3,500 IT managers surveyed worldwide.

Case Study: long-range wireless coverage & durable handsets for stables & kennels

TeleDynamics Think Tank named Blog of the Year

We are pleased to announce that TeleDynamics has been named a silver winner in the Blog of the Year category in Best in Biz Awards.

Launched in March 2016, the Think Tank blog leverages TeleDynamics’ in-house expertise in Session Initiation Protocol (SIP), Voice over Internet Protocol (VoIP) and networking to create content that will help telephone systems channel partners build successful businesses.

 A Texas-sized thank you!

We would like to thank our customers, who by reading our articles and engaging with us through the blog have fueled its success. We are also grateful to our manufacturers and partners, who have contributed content as guest bloggers or have shared customer success stories and other content.

 “We created the Think Tank blog as a way to provide a valuable information resource for our customers,” said Maria Leyendecker, Director of Marketing at TeleDynamics. “Our relationship with our dealers is what matters most to us, and we have enjoyed leveraging this platform as one of many ways to engage with them.”

Advances in technology in the office environment often move both quickly and slowly

Back in May we reviewed Yealink’s innovative T5 smart media phones. Now, Yealink has introduced the Version 40 firmware upgrade for these phones, adding to an already impressive arsenal of features and functionalities.

Almost 90% of businesses in the United States have fewer than 20 employees, according to the United States Census Bureau. To get VoIP service, companies of this size typically use a hosted VoIP service rather than having an on-premise IP PBX. With Epygi Technologies, however, the on-premise solution becomes cost-effective, even for a micro-business with a single employee. How does Epygi do it? We had a chance to ask Mario Cuello, CEO of Epygi Technologies, about what makes them unique in their ability to deliver robust, feature-rich systems at such accessible prices.