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Randy Lyseng

Randy Lyseng's Public Library

24 Nov 09

Power over Ethernet power consumption: The hidden costs

"VoIP migration involves a lot of considerations, but one thing many networking and voice professionals tend to overlook is the additional power it will take to keep a VoIP deployment running smoothly.

According to some experts, powering VoIP, especially when using Power over Ethernet (PoE), can add massive overhead. For many, that extra power comes as quite a surprise.

"PoE for VoIP is just the first step; you're going to be powering more devices," noted Gary Audin, president of Delphi Inc., who has written extensively on power related to VoIP.

As more and more companies turn to LAN switches to power their VoIP deployments with PoE, Audin said, a good number fail to ensure that the wiring closet and data centers are ready to handle increased power consumption. In some cases, new wall sockets are required in order to power the switches that run PoE. In extreme cases, Audin said, an enterprise may have to rely on its utility company to run more power to the building itself.

Audin estimates that on a simple per-phone basis, running VoIP requires roughly 30% to 40% more power than old TDM phones. Running more equipment in the closet is also going to increase the amount of heat generated, requiring additional cooling, which in turn sucks up more power.

Audin suggests that companies considering PoE first determine whether they have enough power in the closet for power supplies. "

searchunifiedcommunications.techtarget.com/...9142,sid186_gci1248152,00.html - Preview

poe voip switches infrastructure

20 Nov 09

The Oooo-Ahhh Versus the Ahhh-Haaa (by Jen Wagner)

good article for tools and choosing appropriately

www.techlearning.com/25424 - Preview

tools

17 Nov 09

Global Voices Online » Impact of ICT on Indigenous Cultures: Rejuvenation or Colonization?

  • But can ICT truly preserve and protect distinct identities and culture? Does ICT by its very intervention introduce an element of westernization amidst the indigenous culture that it purports to preserve and protect? What is the optimum balance between preserving traditional knowledge and embracing remix culture? The cultural debate surrounding deployment of ICT in the field of indigenous/ knowledge and culture simply refuses to die down.

Social Calendar and Event Promotion for Twitter | Taweet

"What are you doing in the future?" ...and search the future to see what others are doing.

taweet.com - Preview

twitter

Thinking in Mind

  • But she feels she can't do it alone.

    And this is where her frustrations lay. After talking for a few minutes, it became apparent that the root of her frustrations lay in the nature of the teaching profession. In her words, there's no one at her school who she can talk to and collaborate with in order to develop meaningful tasks for her students. The main reason she approached me was to ask if I would help her develop projects for her kids - she is craving someone to bounce ideas off, to get feedback and suggestions from. In her experience, she works at a school where there's no one willing to think about teaching and learning in the way she wants to.

    And I think this is one of the key problems with the way education is structured for teachers - teaching is an isolated experience.

    I think of how many grade 6 teachers there are in Alberta. There must be thousands - all of them mandated to teach the same curriculum outcomes. Think of how many thousands of hours are spent by teachers developing learning for kids - in the same grade. What a waste. And more that than - what a frustrating experience it is for teachers - knowing that there are creative, effective, well designed learning experiences that we could be using to engage our students.

    And yet how often to teachers actually get together to collaborate and share ideas?

2¢ Worth » Can Literacy be Taught?

"If we expect students to become fluent in the broader and equally critical information and technology skills of being literate in a networked, digital, and abundant (contemporary) information environment, then they should be required to use those skills in all of their formal education, just like reading. Reading, for education, is a learning literacy. Reading, processing, and expressing knowledge in a networked, digital, and abundant information landscape are equally important learning skills — learning literacies. "

davidwarlick.com/2cents - Preview

literacy warlick

  • If we expect students to become fluent in the broader and equally critical information and technology skills of being literate in a networked, digital, and abundant (contemporary) information environment, then they should be required to use those skills in all of their formal education, just like reading.  Reading, for education, is a learning literacy.  Reading, processing, and expressing knowledge in a networked, digital, and abundant information landscape are equally important learning skills — learning literacies. 

12 Habits of Highly Effective ICT-Enabled Development Initiatives via @sidehann

  • It's not about the technology, it's about the people
  • Habit 2. Conduct a thorough needs assessment of the community to be served so you can plan to do what is actually required.
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