We have about 25 POTS lines that are undocumented, we have three main CO 300 pair feeds coming into the building untagged. What's the best way to verify this? Will the phone company give out the pair number?
If you can figure out the cable and pair positions of unknown telephone numbers, use a butter to call a cellular phone and read the number sent by the LEC. Works most of the time.
I've always liked an MCI 800 number.......(800)444-4444. As soon as you hear the recording saying......"Thank you for calling MCI. Our system indicates you are calling from........", hang up. Works on any line.
Always look out for the next tech. because one day it will be you!
Just because you have a 300 pair coming in to your building doesn't mean you have all 300 pairs for your use. Many times telco is just tapping off the main trunk going by your building - so you're probably getting dial tone for other telco customers in the area on the 'undocumented' pairs coming in. That said - what telco should be providing you is what's called RJ21X terminations (usually a 66 or Krone block with an orange cover in Verizon territory) that you the customer connect to, and they should tag those lines that you're being billed for. Anything else isn't for you to use - they're there for the phone company when you need to add new circuits or move you off to different pairs.
Any good telecom manager type of person should know what he's paying for and what's actually being used. Check your billing, check your RJ21X's, see where they're terminating to.
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