[Asterisk-Users] TDM400P FXO channel remains Offhook after outoing or incoming call / line is parallel with other telephone equipment

[Andrei (MPI)]

Rich Adamson wrote:

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Rich,

Thank you for your  answer. Now I've figured that one of the FXO modules 
on the card may be defective. Whenever I plug in telco line in it - that 
line will be like shortened (if you pick up parallel telephone, the dial 
tone will be heard weaker than usually). So the FXO module is always in 
Offhook state, unable to dial out, unable to detect rings. Reboot and 
Power off/Power on did not help. Any suggestions? Might be just my 
luck.. just my luck.

Sincerely,
Andrei