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TeleDynamics Think Tank

Daniel Noworatzky

Chief Technology Officer, TeleDynamics

Recent Posts

Sangoma's entry-level s205 IP phone

Posted by Daniel Noworatzky on Mar 21, 2018 3:52:00 PM

Product Review

Sangoma has raised the bar for entry-level IP phones with the s205. Now, the robust feature sets ordinarily reserved for executive-level phones are available on this entry-level endpoint, giving access to productivity-enhancing functionality to all the employees in your organization, while controlling costs at the same time.

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Topics: SIP Phones, Business Telephone System, VoIP, SIP, Product Review

Grandstream’s DP760 Long-range DECT repeater

Posted by Daniel Noworatzky on Mar 7, 2018 3:48:00 PM

Product review

In many workspaces, internal mobility is vital.  This is especially true of businesses that have extensive facilities such as warehouses, factories, hotels, schools, or even university campuses where employees are required to physically move from place to place to get their jobs done. In these kinds of enterprises,  professionals must be reachable no matter where they are on campus.

Grandstream’s DP750 DECT VoIP base station enables this type of mobile connectivity by combining two reliable technologies: DECT and VoIP. This base station delivers wireless coverage of up to 300 meters outdoors and 50 meters indoors for up to five DP720 DECT handsets, allowing five concurrent calls while supporting up to ten SIP accounts.

For organizations that need to cover an even greater surface area, Grandstream has launched the DP760 long-range wideband DECT repeater for extending the coverage area of the DP750 base station.

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Topics: Business Telephone System, VoIP, Grandstream, Mobility (including remote work), Cordless, DECT, Product Review

Grandstream’s HA100 high availability controller for the UCM6510 IP PBX

Posted by Daniel Noworatzky on Feb 28, 2018 3:48:00 PM

Product review

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Topics: IP PBX, Business Telephone System, VoIP, SIP, Grandstream, Business Continuity, Product Review, Business Strategy

What's so special about SIP?

Posted by Daniel Noworatzky on Feb 7, 2018 3:55:00 PM

Session Initiation Protocol (SIP) has become the de-facto standard protocol for voice-over-IP (VoIP) phone systems. What does it do and why has it won out over other protocols? We address these questions and more in this article.

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Topics: VoIP, SIP

Common VoIP issues and how to fix them

Posted by Daniel Noworatzky on Jan 31, 2018 3:52:00 PM

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. 

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Topics: VoIP, Troubleshooting

How to hack-proof your VoIP network

Posted by Daniel Noworatzky on Jan 24, 2018 3:49:00 PM

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.

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Topics: SIP Phones, IP PBX, SIP, Network Security, Routers

WAN connections and the SIP trunk: What’s the connection?

Posted by Daniel Noworatzky on Jan 17, 2018 3:54:00 PM

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.

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Topics: Business Telephone System, VoIP, SIP, Network Design

Migrate your legacy customers to VoIP this year

Posted by Daniel Noworatzky on Jan 10, 2018 3:48:00 PM

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.

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Topics: IP PBX, Business Telephone System, VoIP, Trends, Business Continuity, Business Strategy

Yealink’s upgrade to V40 for T5 smart IP phones

Posted by Daniel Noworatzky on Nov 15, 2017 3:54:00 PM

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.

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Topics: VoIP, SIP, Yealink, Firmware Upgrades, Videoconferencing, Android, Product Review

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

Update: Since this article was published, in 2018, Edgewater Networks was acquired by Ribbon Communications.

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

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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