Technical

Beginners Guide to VoIP Audio CODECs

VoIP Network codec symbols
A Voice over Internet Protocol (VoIP) network enables the transmission of voice calls through the Internet or other digital networks. These audio signals have to be encoded into digital data to be transferred over an IP network and vice versa. To make the transmission of audio signals faster, smoother, and improve the overall calling experience, VoIP systems have to compress digital data. T...
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VoIP Best Practices: STUN Implementation in VoIP Environment

STUN response and request scenario image
The STUN (Simple Traversal of UDP over NAT) protocol is a standardized set of methods designed to help UDP packets make it across NAT devices safe and sound. Naturally, one of its key applications is to resolve connection issues in a SIP-based VoIP environment. As we all know, the Network Addressing Protocol (NAT) is a technology that ensures secure communication over the internet and efficient u...
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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 tomorrow, you will need to add ...
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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 Protoco...
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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 c...
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Hosted PBX 4.0 Rolls Out to Customers

Grandstream 3140 - High Definition Multimedia Video Phone
I am pleased to announce the end of Beta and final production release of DLS Hosted PBX 4.0, a SIP-based Unified Communications platform. As this version begins to roll off our upgrade schedule we urge our customers to review the hosted PBX 4.0 release notes and training video. Current release introduces a range of new features and bug fixes intended to improve customer experience. DLS Hosted PBX...
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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 of...
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What VoIP Readiness Assessment Does Not Tell You

In the previous posts I had covered many obvious business reasons driving business VoIP adoption in the enterprise including costs savings, productivity increases, and image benefits. These benefits are typically enabled by VoIP infrastructure on a converged network, but achieved through IP telephony applications such as messaging, conferencing and geographic independence. Realizing VoIP Hosted P...
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Hosted PBX Toll Fraud Attacks: Phreaking

Phreaking (or phone hacking, toll fraud, dial-through fraud) is not new. In the not too distant past it was often a domain of adolescents with modems, phone lines and a PCs looking to make a couple of calls on someone else’s tab to their friends out of state or, sometimes, out of the country. Those call volumes often went unnoticed in the overall vast number of calls on company’s phone bill. ...
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Hosted PBX 3.2 moving into Alpha testing next week

We are excited to be wrapping up feature development for 3.2. There is still a lot of testing and work to be done before this version makes it to public release, but there are a lot of exciting new features in here. Display parking lot number on call status page Improved Parking Lot system Integrated one-touch call recording Barge method for call monitoring Add support for Polycom SoundStati...
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