Ianobi,
Thank you for that clarification.
I have been trying to troubleshoot an audio feedback issue on received calls from the PTSN line, and am grabbing at straws trying to resolve it.
Close as I can tell, based upon my hours scouring the forum and G00gle, it appears to be an impedance mismatch.
However, I cannot seem to find the proper impedance for my phone system (verizon) to match it with the OBi110.
Again, thank you for your valuable information.
PCLarry