Has anyone had their cp 100/150 hang on to line 1 for an extended period of time ? Unplugging vm system will then release the line... Has just happened a few times sporatically. I'm kinda new to this , so forgive me if I have posted in the wrong area....
In that case your provider is sporadically not sending the DS signal, or it's outside the acceptable duration. You can change the DS timing in the system as well.
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