13 Articles Tagged Tech Primer

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How Do You Implement Presence with SIP?

  • Andrew Prokop
  • June 2, 2014 | 6 minutes to read
  • Are you familiar with busy lamps on telephones? For many years, they were the only way you could “see” the telephone status of a coworker.…
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Untethering the User from the Device with SIP

  • Andrew Prokop
  • May 21, 2014 | 5 minutes to read
  • Those of you (like me) of “a certain age” might remember that your first work telephone was probably an analog 2500 set. It was fine…
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Would an Emergency 911 Call Work from a SIP Phone?

  • Andrew Prokop
  • May 16, 2014 | 8 minutes to read
  • Have you ever had the need to dial 9-1-1? Unfortunately, I have. It was just one time, but one time is enough for me. I…
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What Happens if You Don’t Create a Secure SIP Infrastructure? Bad Things.

  • Andrew Prokop
  • May 12, 2014 | 4 minutes to read
  • What happens if you don’t create a secure SIP infrastructure? Bad things can happen. There are lots of nasty people out there who are determined…
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SIP Session Manager Tricks from IAUG CONVERGE 2014

  • Andrew Prokop
  • May 8, 2014 | 4 minutes to read
  • I attended the International Avaya Users Group Converge2014 in Dallas, Texas last week. This has been an annual event for me for many years and…
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Don’t Let SIP Endpoints be Your Achilles Heel

  • Andrew Prokop
  • May 5, 2014 | 6 minutes to read
  • I was out East last week (I grew up in Arizona and we call everything on the right side of the map “out East”), where…
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How do You Do an SIP INVITE Request?

  • Andrew Prokop
  • May 1, 2014 | 8 minutes to read
  • As a high school student, I loved biology. I loved learning about the natural world and how our bodies function. The spleen was my friend…
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SIP Media Management: Early or Late?

  • Andrew Prokop
  • April 29, 2014 | 5 minutes to read
  • In a previous blog, I addressed the concepts of early offer and late offer. You are welcome to read the article, SIP Media Management: Early…
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Understanding the SIP OPTIONS Request

  • Andrew Prokop
  • April 24, 2014 | 3 minutes to read
  • Several years ago I bought my sons a set of walkie-talkies. Some of you may remember that for a while they were huge with the…
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Avaya IP Shuffling: What Exactly Happens?

  • Andrew Prokop
  • April 16, 2014 | 4 minutes to read
  • Here in Minnesota we like to say that there are only two seasons – winter and road construction. As winter finally comes to an end…
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Rummaging Through the SIP Closet

  • Andrew Prokop
  • April 14, 2014 | 4 minutes to read
  • I have a difficult time throwing things out.   Perhaps it’s due to my optimistic nature, but I always feel that no matter how long…
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SIP Message Bodies: What do They Mean?

  • Andrew Prokop
  • April 11, 2014 | 5 minutes to read
  • I was born and raised in Arizona, but for many years I’ve called Minnesota home. Yes, I understand that most people make the opposite move,…
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Web Services for Knuckleheads

  • Andrew Prokop
  • April 10, 2014 | 5 minutes to read
  • On a number of occasions, my blog articles have used terms such as web services, SOAP, REST, and RESTful. Without providing much explanation, I’ve stated…