They have a cordless 2 line phone system that is daily dropping calls and the main thing is that they cannot be heard by callers, intermittently but often, on all sets. There is just the one corded base and 5 cordless handsets. 6.0 DECT.
They also, at the front where the AT&T phone base with the big antenna is, have a cordless printer, a Ubiquiti WAP, which is just a bridge from the one in the back that is plugged in to the router, a cordless headset. In the back, on the floor under a desk, they have another cordless phone with the 2 big antenna, a wireless printer, another Ubiquiti WAP, a wireless modem from Spectrum, a wireless Linksys router, and I think that is it. Then around the office there are 3 more cordless handsets just the remote kind.
They have changed telco providers and have changed the phone system 3 times. I loaned them a 2 line Panasonic corded/cordless 2 line system for a week, same issues.
SO...my question is, do all of these frequencies cause problems? I don't see how they wouldn't but honestly don't really understand all of it. I am a wiring person and I know that copper is more reliable than air and I don't know why anyone would run an entire office with everything wireless.
I am recommending trashing the Sync AT&T phones they just paid $500 for and getting everything wired. But they say they do not have the budget for it. I say they will spend the same amount on service calls from me, the IT guy, and telco trying to troubleshoot. Again, the issues are mostly that callers have to call 2 or 3 times before they can hear the P.T. employees picking up the calls.