"We're stuck with the ILEC hardware for transport whether we use OfficeSuite or Zoom.
How about the dedicated hardware Windstream uses for OfficeSuite - is it any better ?"
Accedian still makes the MetroNids. We install them almost everyday. We have transitioned away from the TE model and gone to the GT's. GT's have alarm reporting capabilities that the older TE's didn't have.
There is no dedicated OS equipment. It is either Mitel phones, Polycom phones or Allworx phones that have had the firmware upgraded to automatically look for the Broadview server once connected to the internet. It's such a great product, that the local techs that will come out and install it, don't even have access to the OS portal to help make any changes you might need made. The techs will have to call the OS support group, be transferred several times and finally get a "support" tech that might be able to help and make the changes that need to be made, if you can get past the language barrier .
And wait until you have an issue after the install and after your 30 day "free support trail". You will have to make a trouble ticket through the portal, which will get you a 10-14 day response time. Or wiat for an hour to get someone on the phone and then wait 14 or more days for it to be resolved.
We had a customer call in multiple times a day, everyday, for over a month. Their only 2 OS phones were dead in the water, and due to an issue with their shipping address in "the system", support refused to ship them new phones instead of trying to fix the issue. It took a local tech and a manger getting involved to get the problem corrected and 2 new phones shipped to the customer. And even that took an additional week and a half of having the tech and manager pulling ever string they could.