30 Nov
1999
30 Nov
'99
2:12 p.m.
Q1: Can anyone tell me the two tone that make up dial tone?
330 and 440 IIRC
Dan
Q2: What's the ring voltage (p-p) and frequency? 90Vpp? 10cyc?
90v 20 hz
Q3: What's the off hook and on hook line Voltage? 9VDC and 45VDC?
about right IIRC
Dan