T1 protection question

[tbw]

I am trying to figure out what voltages are on a T1 circuit coming from tel.co.'s smart jack. I need to put surge protection on the circuit before it gets to the IAD/channel bank. Basically I need to now the approximate clamping voltage required.

 

[kwing112000]

You can buy protectors for them. Towermax makes one.

Kevin Wing
ACS- Implement IP Office
ACA- Implement IP Office
Carousel Industries

 

[tbw]

Thanks ! I will give them a call. I tried ITW Linx tech support but ended up in a mailbox. If I know the voltages I can figure it out from there.

 

[kwing112000]

http://www.dcbnet.com/notes/9611t1.html

that link may help you.

Kevin Wing
ACS- Implement IP Office
ACA- Implement IP Office
Carousel Industries

 

[tbw]

Kevin,
Thanks for the info-I will plow through it!

 

[SYQUEST]

Good link Kevin! But I did find some errors and omissions, otherwise it is a good DS1 history...

ITW/Linx makes protectors also. As far as line voltage is concerned, the customer side should have no more than 5 or 8 volts from the DEMARC, since Telco has not powered any CSUs since the late 1980s. But to be safe and cover all the bases I would suggest that you use the same protection level as a POTS or voice circuit. Using the ITW/Linx protector, the voltage rating would be 235 volts.

....JIM....

 

[strmwalker]

the best i have used is ONEAC model#RJ-DP48C
breakdown voltage is (60-170VDC)

no problems only solutions

strmwalker

 

[tbw]

Syquest& Strmwalker

Thanks for the input -you have been very helpful. I can now put this one to bed!