Length of wire allowed to be connected to OBI200 phone port

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Quintus:
The signaling for phone wire is less demanding, but ethernet is a digital protocol. That digital protocol will resist noise. Also CAT5 cable has the twisted pair cabling which negates the need for shielding.

Personally, I don't know enough about longer lengths of phone cable. I took an undergrad class in networking basics, but I don't know the signal loss associated with types of cables. If the signal loss is small enough for 200 ft of phone cable, then you would be correct that phone cable is the superior solution.

I just had another thought. How would one prevent critters from biting into the cable? 200 ft is a long enough length that it becomes very concerning how one would protect from vermin. And if the cable does get bitten through, how would you splice the broken cable such that it is weatherproof? Again, I'm pleading ignorance. I simply don't have the experience in laying down cable.

Demos:

Based on a Telcordia requirements that can be found in one of the Telcordia LSSGR documents, the ILEC (Telco), has to deliver supervisory DC current no less than 20ma @ -48VDC, to operate the transmitter and DTMF touch tone pad, and a minimum of 55VAC RMS to ring a maximum of four C4 Type mechanical ringers delivered at the DEMARC. Not all electronic ringers are equal. Look at the Ringer Equivalency designation on a telephone, as required by the FCC since 1979.

A Typical TelCo 2W POTS loop is designed for a maximum 1300 Ohms, and 8.5 dB of loss. Something that the OBI ATA's will certainly not meet. However I suspect that an OBI ATA's will work out on a two wire loop of no more than 200 Ohms. More than likely equal to a Part 68 OL-13A registered PBX port.

The bigest potential trouble will be noise on a long two wire connecting loop to an OBI ATA due to power influence inductance. Using CAT5/6 cable to extend the OBI200 FXS port should work well. Just be careful with the total number of the number of ringers attached to the line.

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