We use a regular land line to perform test-calls to test line clarity, line noise-levels, event timing, call-propagation, etc...
HELP: We use a PC-Based Telephony (PBT) system to dial out test-calls. We need a simple circuit so we can hook up a "second phone" to the same line via a simple line splitter. The "second Phone" will be used for monitoring the call being dialed out by the PBT, yet NOT interfere with the "Line Signaling", and not adding to the "Line Noise". We tried a speaker-phone-on-mute, but it drew too much from the line, and added noise.
ANY ideas are greatly appreciated.
Thanks!