The Need for Firewall Configuration in VoIP

The Need for Firewall Configuration in VoIP VoIP systems are a crucial investment for all organizations, regardless of their type or size. As these systems rely on the internet, they help streamline communication for organizations in a reliable and cost-effective manner. But, just like traditional telephony, VoIP networks are under threat of various impersonation-based identity … Read more

Building a Strategic Technology Plan Part 2

continued from part 1. Sound Infrastructure Choices Look for long term solutions with broad compatibility when choosing a software solutions. Generally, open source platforms are easier for other vendors to integrate their add-on solutions with and help keep costs lower. Consider that today your company may only need an accounting program with payroll software, but … Read more

Will the Switch to IPv6 Create VoIP and PBX Problems?

Right now the Internet is going through a massive transition, an overhaul of the addresses that will impact every network device connected to it.

What is this overhaul?

How will it change the Internet?

And how will it impact business VoIP telephony?

Big Questions First

The massive transition we’re talking about here is the change from IPv4 to IPv6, or the change from the old Internet Protocol (IP) system to its newest iteration. Int

Now, the old IP is known as the Internet Protocol Version 4, or the IPv4, and it’s the set of rules that have been in place providing the scaffolding for the Internet since day 1. IPv4 works really well, as most internet communication still occurs using its rules, but we’re now transitioning to the new version of the Internet Protocol, a new set of scaffolding known as the Internet Protocol version 6 or IPv6.ernet Protocol lies at the heart of how the Internet works; it defines the way data packets transfer from one connected device to another over various bundles of equipment, cables and wireless signals. The Internet Protocol outlines the rules for how these data packets are labelled, how they are located, and how they are routed over the web.

So basically we’re in the middle, or more accurately at the beginning, of transition from IPv4 to IPv6.

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SIP Trunking Explained

If you know very little about telecommunications but have some basic understanding of the Voice over IP technology – you will have no trouble grasping the concept of SIP trunking. Understanding why DLS chooses not to offer this service may take some explaining.

Understanding Trunking

The word “Trunk” has more than one meaning but in communications it came to represent a concept of a part that can be divided into branches and vice versa. More specifically, the term “trunk” is used to describe a transmission channel between two switching systems. Such transmission channel could be comprised of one or more communications circuits. When you think about public switched telephone network (PSTN), you imagine many different telephone switches all connected to each ot

her using trunks. Each trunk would typically consist of multiple trunk lines. Trunk sizes vary depending on how many trunk lines are in it.

Since the 1970s telecom services largely relied on the technology called TDM (Time Division Multiplexing). This technology allowed delivery of fixed number of voice channels per digital circuit. For example: T-1 circuit would contain 24 channels, PRI – 23 channels, etc.  Each channel could be used for voice or data. This technology represented a significant leap from the analog switches because it allowed delivery of multiple channels over a 4-wire connection eliminating costly requirement for individual copper pairs to be run from the central office switch. A business could purchase a digital circuit(s) and pool some or all of its channels into trunk. These channels would then be referred to as “trunk lines”.

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VoIP Bandwidth: Quality vs. Quantity

Digital leased lines are no longer the favorites of bandwidth-hungry businesses. As many alternative sources of affordable Internet bandwidth became available, dedicated point-to-point leased lines begun to fall out of favor with many small businesses. Their relatively high cost, by today’s standards, per megabit of bandwidth make them unattractive in comparison to the generous shared bandwidth offers from various telecommunications and cable carriers. That said, it seems like rumors of their rapid demise are being greatly exaggerated. T-1 lines, for example, seem to be entering their 7th life as market for them is getting sudden support by those who had to deal with at least one DSL or Cable outage.

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