@mba2ceo we normally have a typical idle voltage of -46VDC to -52VDC, when your set goes off hook/when you pick up the phone, we go down to a carrier voltage of -6VDC to -10VDC.
I believe Voip, or cable based phone systems use -20VDC idle, and KSU/PBX systems will read the same as a typical line, on the CO side, but on the set side i believe there is no visible idle voltage as its all a digital signal. (tho I would need to check on that to be 100% sure)
Keep in mind. If you get caught doing this it's a $12,000 fine. Is it illegal to do this yourself
DeniroPacinoDeppJoaq 2 months ago
@mba2ceo we normally have a typical idle voltage of -46VDC to -52VDC, when your set goes off hook/when you pick up the phone, we go down to a carrier voltage of -6VDC to -10VDC.
I believe Voip, or cable based phone systems use -20VDC idle, and KSU/PBX systems will read the same as a typical line, on the CO side, but on the set side i believe there is no visible idle voltage as its all a digital signal. (tho I would need to check on that to be 100% sure)
therealandycook 4 months ago
Thank You! I pulled the RJ jack from the wall and you saved me a call to the cable company! <3
PaulSilverWolf 6 months ago
If the voltage difference is ~50V where does the 9V premiss come from ?
mba2ceo 11 months ago