kthompso@entec.wichita.ncr.com (Ken Thompson) (11/09/89)
I used the following circuit with my machine:
________| |________
| | | |
| 10uF |
| |
_____________|_____/\/\/\/\_____|__________
1Kohm
Put it in series with one leg of the pair to the machine only. The
cap. passes the ring signal. The resistor is the key here. With the
machine off hook the line has a higher resistance, current is
relatively constant. The machine thinks it is on a longer drop pair
and works normally Lift any phone in the house and most of the current
goes to the phone. If the machine checks the current in the loop or
has a vox circuit, it does not matter, it thinks the caller has hung
up and it also disconnects.
Ken Thompson N0ITL
NCR Corp. 3718 N. Rock Road
Wichita,Ks. 67226 (316)636-8783
Ken.Thompson@wichita.ncr.com