Hello my fellow industry professionals!
Quick tip for today, there is a command on Cisco routers you can use to check if an FXO port is actually plugged into a line or not, the command is:
test voice port 0/0/0 si-reg-read 29 1
(replacing 0/0/0 with your voice port number)
The output should look something like this:
VOIP-Gateway#test voice port 0/0/0 si-reg-read 29 1
001048: *Jan 8 22:22:40.151 EST:
Values read from SiLabs Codec connected to DSP 0, channel 0:
--------------------------------------------------------------
Register 29 = 0xCE
If the hexadecimal value above is 0x0 then no line is connected, 0xCE means there is indeed a line plugged in!
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