Smartphones

Safely Deploying Incredible PBX on the Wide Open Internet

Safely Deploying Incredible PBX on the Wide Open Internet

Monday, June 3, 2019

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We’ve previously documented the benefits of SIP URI calling. Because the calls are free from and to anywhere in the world, the use case is compelling. The drawbacks, particularly with Asterisk® servers, have primarily centered around the security implications of exposing SIP on a publicly-accessible server. Today we want to take another look at an open Internet SIP implementation for Asterisk based upon the pioneering work of Dr. Lin Song back in the PBX in a Flash heyday. We’ve embellished… Read More ›

Best of Both Worlds: Safely Marrying Asterisk to OpenSIPS

Best of Both Worlds: Safely Marrying Asterisk to OpenSIPS

Monday, May 20, 2019

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Last week we introduced OpenSIPS, the multi-functional, multi-purpose signaling SIP server which can fulfill almost any communications function one can dream up except the unified communications tasks typically performed with a PBX such as Asterisk®. Today we want to marry the two platforms to give you the best of both worlds. For Incredible PBX® users, the primary advantage of adding an OpenSIPS front end is the elimination of the complexities associated with interacting with your PBX from remote sites with… Read More ›

The 5-Minute Wonder: OpenSIPS Server Takes the Cake

The 5-Minute Wonder: OpenSIPS Server Takes the Cake

Monday, May 13, 2019

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We covered Kamailio in our Part I article. And we’ve skipped writing about SIP server contestants two, three, and four because they each had a healthy dose of insurmountable problems… at least for us. So today we’re pleased to present Part V in our SIP server series. And, as the headline exclaims, with OpenSIPS we’ve found a platform that finally is worthy of your attention. Our requirements were fairly straightforward. We wanted an open source SIP server to which we… Read More ›

The Very Best Cellphone Plans and Smartphones for 2019

The Very Best Cellphone Plans and Smartphones for 2019

Monday, May 6, 2019

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You can read reviews of the best cellphone plans and smartphones until your eyes glaze over and still end up scratching your head when it comes to making a decision. Our approach is a little different. It’s about making smart choices based upon the specific requirements for you and your family. Let’s get the obvious criteria out of the way first. The cellphone provider that you choose has to work in your home, on your way to work, at your… Read More ›

Meet Linphone: Free Worldwide Calling to Anybody with SIP

Meet Linphone: Free Worldwide Calling to Anybody with SIP

Monday, April 29, 2019

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Earlier this year we demonstrated how to set up a publicly-accessible Asterisk® server to enable free worldwide calling using SIP URIs which are email-like addresses for VoIP and video calls. But not everyone has an Asterisk server so today’s tutorial extends free calling to everyone with a Windows or Linux PC, a Mac, or any smartphone or tablet. All you need is a desktop computer with wired or wireless Internet access or, on a smartphone or tablet, a cell data… Read More ›

Interconnecting a Mobile PBX to the Asterisk Mothership

Interconnecting a Mobile PBX to the Asterisk Mothership

Monday, April 22, 2019

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The Holy Grail for a mobile VoIP solution is a simple way to connect back to your primary Asterisk® PBX via Wi-Fi from anywhere in the world to make and receive calls as if you never left. Let’s tick off the potential problems. First, many home-based PBXs are sitting behind NAT-based routers. Second, almost all remote Wi-Fi connections are made through a NAT-based router. Third, chances are the remote hosting platform blocks outgoing email from downstream servers such as a… Read More ›

A New VPN for All Seasons: Introducing OpenVPN for Asterisk

A New VPN for All Seasons: Introducing OpenVPN for Asterisk

Monday, April 15, 2019

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This month marks our twentieth anniversary wrestling with virtual private networks. Here’s a quick walk down memory lane. Our adventure began with the Altiga 3000 series VPN concentrators which we introduced in the federal courts in 1999. It was a near perfect plug-and-play hardware solution for secure communications between remote sites using less than secure Windows PCs. Cisco quickly saw the potential, gobbled up the company, and promptly doubled the price of the rebranded concentrators. About 10 years ago, we… Read More ›

Cell Phone Tips for Spring Break and International Travel

Cell Phone Tips for Spring Break and International Travel

Monday, March 25, 2019

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With Spring Break upon us and Summer Vacations just around the corner, we wanted to briefly review some of your cellphone and data options for those that might be planning a trip outside the United States. If you’re only going as far as Mexico, Canada, or the U.S. Virgin Islands, then your existing cellular provider in the U.S. may have you covered at no additional cost. If your provider is not AT&T, then check with your carrier. And speaking of… Read More ›