d/lloodd11_156

esistor and capacitor are no
longer shunted, and they become part of the telephone circuit.  When you lift
the switchhook on the test set, you will not receive dial tone, due to the fact
that the cap blocks DC, and the resistor passes less than 4 mA nominally (far
below the amount necessary to saturate the supervisory ferrod on ESS or close
the line relay on any other switch).  However, you will be able to silently
monitor all audio on the line.  The cap reactance + the phone's impedance
insure that you won't cut the signal too much on the phone line, which might
cause a noticeable change (..expedite the shock force, SOMEONE'S ON MY LINE!!).
It's also good to have a VOM handy when working outside to rapidly check for
active lines or supervision states.  Also, you can buy test equipment from
these companies:

Techni Tool - 5 Apollo Road, Box 368. Plymouth Meeting, PA. 19462.
Specialized Products Company - 2117 W. Walnut Hill Lane, Irving, TX. 75229.

                         ***********