VoIP Tech Chat

Patrick and Fred Chat… sometimes about VoIP

Archive for the ‘Adhersion’ tag

Asterisk 101 Uses: Telemarketer Torture

30 comments

Note: You can play or download the MP3 audio of the “Telemarketer Torture” calls towards the end of the article.


When I first started working with VoIP, I began to hate telephony, and any and all things telephone related. This bothered me on many levels. You see, as a kid, I loved telephones. Growing up in the “big city,” pay phones seemed to be on every corner. Family stories talk about walking several blocks extra, just to avoid me seeing and wanting to play with a phone. But, as usual, I digress…

When I worked with an unnamed switch (let’s just say it rhymed with Broadmoft), I hated working with VoIP. I knew there had to be a better way and started playing with Asterisk. Soon, my memories of playing with phones started coming back and my love rekindled. Now, I look forward to working with phone systems, only because I truly feel that the use of a phone can only be limited by your imagination. And with companies like Twilio, Adhearsion, and Digium, the community of telephone developers seems only to grow.

With that long winded introduction, let’s discuss today’s topic — telemarketer torture. Read the rest of this entry »

Written by Fred

July 17th, 2009 at 7:30 pm

A2DDA Blocks Asterisk Parking Data

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Note: There’s an intro, the DDA response, and Fred’s response in this article. Jump to the end to read Fred’s response.

A few months back, we posted a nice little article on using Asterisk to get Parking Space Availability from Ann Arbor garages. The response from the VoIP community was fantastic! We received great comments and feedback from people like Jason Goecke, Dug Song, Dave Michels, Evan Cooke, and more! People not only responded, they even showed different ways of providing access to this information. And everyone shared their work in an open forum — truly a great example of open source coding inspiring innovation (albeit with Parking Spaces).

Even better was the local response in Ann Arbor. Edward Vielmetti and Fred Posner were interviewed in the local papers, appeared on a radio show, and even rode the teeter totter. Everyone loved the idea of being able to check on parking space availability… everyone except for the DDA (insert scary music).

The DDA (Ann Arbor Downtown Development Authority), funded by tax dollars,  “provides a diversity of transportation and parking options to meet downtown’s [Ann Arbor’s] ever-changing needs.” The DDA does not like us making information of parking spaces available to the public via phone. Instead, the DDA wants to control this information. Seriously, they want to control parking space availability information.

Tyler Erickson helped Edward Vielmetti and Fred make this project even more fascinating by tracking parking space availability over time. The plan was to provide predictability of availability. For example, “We’re sorry, the lot at 4th and Washington is currently filled, we predict the parking lot will be available in 7 minutes. Press 1 to be notified…”

Wouldn’t that be neat? We thought so… The DDA’s response was to block Tyler’s access. Of course, since it was using Google Apps, it blocked Google, but that’s another story. We inquired as to why this blockage occurred and… well enter Susan Pollay. Susan Pollay is Executive Director of the DDA. She told us (and remember, this is a tax funded organization): Read the rest of this entry »

Written by Fred

March 12th, 2009 at 6:03 pm

Diff’rent VoIP for Diff’rent Folks

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What you VoIPing 'bout Willis?

What you VoIPing 'bout Willis?

Yes, you guessed it correctly. In today’s article, Diff’rent Strokes will be used as a metaphor for VoIP. Why? The correct question is “Why Not?” And the answer… well that’s simple — Diff’rent Strokes is the perfect metaphor. Take for example these classic lines from the show’s theme song:

Now, the world don’t move to the beat of just one drum,
What might be right for you, may not be right for some.

Classic. Pausing for Trivia… do you know which 80’s sitcom star wrote these lyrics? If you said Growing Pains actor and Canadian sensation Alan Thicke, you’d be right… but, as usual, we digress.

Those working within VoIP, and contrary to many medical reports there are people still working in the industry, have many flavors and styles of VoIP products to choose from. Although opinions vary, there really is no “right” or “wrong” product line. Selecting your VoIP implementation is an individual choice that is determined simply by what works best for you. Read the rest of this entry »

Written by Fred

January 14th, 2009 at 12:32 pm

Use Asterisk, Cepstral, and Perl to Get Parking and Weather Updates

27 comments

Note: For information on Ann Arbor DDA blocking this application, click here.

VoIP is Fun

VoIP is Fun

Patrick and Fred eat, breathe, and live telecommunication. So, when the chance to make fun little phone applications come around, we like to jump on it. Recently, while discussing parking issues with Ann Arbor’s Edward Vielmetti, and idea came to mind. Mr. Vielmetti is active within the Ann Arbor community and among the many hats he wears, one seeks to provide access to accurate information concerning downtown transportation and parking (wow that was a mouthful). While discussing the lack of accurate bus information in Ann Arbor, the conversation took a tangent (yes, how odd that conversations with Fred or Patrick take tangents) on the area of parking.

The parking garages in Ann Arbor provide nice signs in front displaying in brightly lit numbers, the amount of available spaces remaining. Ann Arbor also posts this information on the web at the A2DDA website. An idea came to mind that basically, you can tell the available spots either from the website or right when you reach the garage — but what if you wanted to know while driving to the garage?

So, with that long introduction, we present “using asterisk, cepstral, and perl to get parking and weather updates.” Ok, for the non-techs, don’t panic! We’ll talk about the techie stuff in a little bit. The bottom line is using Asterisk, Cepstral, and Perl, you can check the internet for the spaces available and let the caller know — all in real time. For a working example, call +1 (212) 937-7844 and press 6 +1 (734) 272-0909 (this is not a toll-free number).

Read the rest of this entry »

Written by Fred

January 8th, 2009 at 6:39 pm