46 Articles Tagged sip

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How to Realize Huge Cost Savings for Enterprise Telecom

  • Michael Blake
  • September 29, 2016 | 3 minutes to read
  • This case study shares the steps taken by Avaya to reduce a sizeable telecom bill by 50%. The methods are trending tactics used by a…
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Understanding SIP PRACK for Avaya Aura

  • Andrew Prokop
  • December 9, 2015 | 4 minutes to read
  • As many of my readers know, every few months I teach a two and a half day class on “all things SIP.” My students are…
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Understanding Avaya Aura SIP Registration

  • Andrew Prokop
  • December 1, 2015 | 5 minutes to read
  • “Let’s start at the very beginning/a very good place to start/when you read you begin with A B C/when you sing you begin with Do…
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Learning to Work With Avaya Aura Session Manager Adaptations

  • Andrew Prokop
  • November 17, 2015 | 9 minutes to read
  • The problem with standards is that they rarely are. Despite the fact that SIP has been around since the 1990s, is fairly well documented, and…
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An Even Closer Look at Avaya Aura IMS Call Processing

  • Andrew Prokop
  • November 5, 2015 | 5 minutes to read
  • Last week, I walked you through how Avaya implements IMS processing between Session Manager and Communication Manager.  Even though it may have looked fairly complicated and…
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A Close Look at Avaya Aura IMS Call Processing

  • Andrew Prokop
  • October 28, 2015 | 6 minutes to read
  • It goes without saying that SIP is a protocol. After all, it stands for Session Initiation Protocol. It’s a series of request methods, responses, headers,…
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A WebRTC Security Primer

  • Andrew Prokop
  • July 15, 2014 | 3 minutes to read
  • There are a number of reoccurring themes in my blog articles and security is near the top of the playlist. If you’ve been a long…
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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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The Cloud: Your Disaster Backup for Business Continuity

  • Andrew Prokop
  • April 25, 2014 | 4 minutes to read
  • [caption id="attachment_3034" align="alignnone" width="450"][/caption] I hit a deer on my way to work one day. Actually, the deer hit me, since I was minding my…