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Low-cost telecom protection?

D

Dr. O

Jan 1, 1970
0
Has anyone any ideas for a low-cost telecom protection which can pass
regulatory tests such as FCC Part 68 and ITU K.20/K.21? I'm currently using
a combination overcurrent fuse and an overvoltage protector (thyristor type
Bourns TIPS). These are pretty expensive, though, and I'm looking for some
ideas to lower costs.

Now, I've seen some designs which only have a varistor (MOV) inside, but I
doubt that such a design would pass regulatory tests. And replacing the
overvoltage protector with a gas-discharge device probably won't be much
cheaper either.

Anyone have any experience with this? Thanks in advance!!
 
D

Dbowey

Jan 1, 1970
0
Dr.O posted:
<< Has anyone any ideas for a low-cost telecom protection which can pass
regulatory tests such as FCC Part 68.... >>

What particular section? Or what type of circuit (service)? Part 68 cuts a
broad swath. Are you working on CPE or Network equipment?

Don
 
J

j.b. miller

Jan 1, 1970
0
In the 'been there-done that' scheme of things, several years ago I went to
the DOC( Canadian eq. of FCC) about the regs of 'type approval' for a 'modem
like device' connecting to the phone lines. I was sent a package that
weighed about 15 pounds. More 'gobbltygook' than I cared for.
It was far,far cheaper to reengineer the project to use standard( at that
time) 8 bit ISA 2400 baud modem cards,which were already approved.That was
20 years ago and they are still working....

Just another way to look at the project...

hth
jay
 
D

Dr. O

Jan 1, 1970
0
Dbowey said:
Dr.O posted:
<< Has anyone any ideas for a low-cost telecom protection which can pass
regulatory tests such as FCC Part 68.... >>

What particular section? Or what type of circuit (service)? Part 68 cuts a
broad swath. Are you working on CPE or Network equipment?

CPE
 
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