Network Tools - CompTIA A+ 220-1001 Prof Messer
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@mary said in Network Tools - CompTIA A+ 220-1001 Prof Messer:
What is a wall of punch down blocks used for?
Legacy phone systems like in the 1980s.
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@scottalanmiller said in Network Tools - CompTIA A+ 220-1001 Prof Messer:
@mary said in Network Tools - CompTIA A+ 220-1001 Prof Messer:
What is a wall of punch down blocks used for?
Legacy phone systems like in the 1980s.
Scott is of course over selling this - there are many places that still use and amazingly deploy this today.
If you install a digital phone system, not a VOIP phone system, it's likely the phones would be connected to a 66 block like that shown in the video.
Yes, these are still being sold today.
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@Dashrender said in Network Tools - CompTIA A+ 220-1001 Prof Messer:
Scott is of course over selling this - there are many places that still use and amazingly deploy this today.
But ONLY for legacy phone systems, there is no use case for this for modern (post 1990s) phone systems. None. This is a purely legacy system for legacy non-data cabling.
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@Dashrender said in Network Tools - CompTIA A+ 220-1001 Prof Messer:
Scott is of course over selling this
Where "of course" means "not".
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@Dashrender said in Network Tools - CompTIA A+ 220-1001 Prof Messer:
Yes, these are still being sold today.
This implies you don't know what legacy means. Of course legacy systems are still sold to people today. You can still buy any old thing you want. You can buy CRT televisions, analogue phones, incandescent light bulbs, oil lamps, whatever. Legacy means it's legacy, not unavailable.
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@Dashrender said in Network Tools - CompTIA A+ 220-1001 Prof Messer:
If you install a digital phone system, not a VOIP phone system, it's likely the phones would be connected to a 66 block like that shown in the video.
Exactly what I said. If you install a legacy phone system. Digital phones are from the 1980s, and that's on the public side. Private is even older. Digital is the old tech that has had no purpose since the late 1990s except for shops that are either fooled into buying something without research, or are trying to keep using legacy investments without having updated in roughly two decades.
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How does the tone generator work exactly? How does it give different tones to different wires?
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@connorsoliver said in Network Tools - CompTIA A+ 220-1001 Prof Messer:
How does the tone generator work exactly? How does it give different tones to different wires?
Basic electronics. It's a circuit like this...
http://electroniccircuitsforbeginners.blogspot.com/2009/12/tone-generator-circuit.html
It's nothing more than a simply EM wave put on the wire. Way more simple than you are likely picturing. Not like an IT thing, like a "fifth grader making a basic circuit" thing
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@connorsoliver said in Network Tools - CompTIA A+ 220-1001 Prof Messer:
How does it give different tones to different wires?
It doesn't. The basic tone generator only tones a single pair. But because of crosstalk, you still need to verify the pair with a continuity test to be certain.
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I remember when sometimes I used some of the network tools mentioned on this video, also making my own RJ45 cable connection for first time.
