Internet Phone System Blog - DLS Internet Services

Role of Hosted PBX in Disaster Recovery Planning

January 25, 2022March 19, 2011 by Sam Rozenfeld

Recent events in Japan bring me back to the subject of service survivability and business continuity in the event of a natural disaster. Japan is heavily reliant on VoIP for its telephony. In a way, this has been another significant test of IP communications in a disaster and it appears that the outcome paints fairly … Read more

VoIP and 911: placing a call

July 12, 2022March 12, 2011 by Sam Rozenfeld

Geographic portability of VoIP puts the burden of keeping track of the source location on the operator, not the service provider. Like it or not, but customer must take the responsibility to update the location information of the telephone as the VoIP providers will not be aware of the move.

Hosted PBX vs. Virtual PBX ?

January 25, 2022March 6, 2011 by Sam Rozenfeld

When it comes to Google searches on keywords such as “Business Phone Service” – one can get lost in the myriad of options: “PBX, VoIP, Hosted PBX, Virtual PBX”… . One of the challenges facing entrepreneurs and business executives looking for new communications provider is having an ability to understand the difference between technology solutions. … Read more

Securing Your Hosted VoIP Installation

January 25, 2022March 1, 2011 by Sam Rozenfeld

Converged VoIP communications can be made as secure as traditional PSTN. Voice over IP threats such as toll fraud, denial of service attacks, impersonation exploits, phreaking and eavesdropping can be prevented and contained with proper planning and design.

QoS: Panacea or Snake Oil?

February 11, 2022February 14, 2011 by Sam Rozenfeld

IT and Telecom professionals have long been infatuated with the concept commonly referred to as QoS (which stands for Quality of Service). Of course ensuring that Voice over IP meets high voice quality requirements is a key concern when it comes to designing networks. New QoS protocols: Differentiated Services (DiffServ), the Label Distribution Protocol (LDP) and the once almost forgotten Resource Reservation Protocol (RSVP) have been designed by some of the brightest minds in IP networking and data processing.

DLS Hosted PBX Presented at IAO Annual Meeting

January 25, 2022February 8, 2011 by Sam Rozenfeld

When appearing at professional industry show or event with a service such as DLS Hosted PBX, I always try to put it in the context of this industry’s business application. I’ll admit, this isn’t always easy. That part aside, however, there were a couple of things that I found to be worthy of exploring. First, … Read more

Demystifying buzzwords: Unified Communications

July 11, 2022February 4, 2011 by Sam Rozenfeld

Isn’t it amazing how often we let all of the new technologies and buzzwords intimidate us ? While it’s true that your company should be embracing new ideas, the most important part of your website is probably still the “contact us” link. And the most important tool on your desk is still a phone. Bottom … Read more

Thoughts on Telecommuting

July 12, 2022January 28, 2011 by Sam Rozenfeld

telecommuting can be a great business continuity solution, as long as everyone: knows what resources are available in times of emergency, has access to those resources, and knows how/is able to use them

Welcome to our VoIP blog!

January 25, 2022December 27, 2010 by Sam Rozenfeld

Hello, My name is Sam Rozenfeld and I am a CEO of the DLS Internet. The purpose of this VoIP blog is to establish two-way communications between people who design, install and engineer DLS Hosted PBX solutions on one side and people who use it or may be using it in the future. In this blog we are … Read more