Is the "phone switch" you speak of in the upgrade something that supports only phones in your central office, and so forth, or is it the central switch (if it should be called that), or software, that supports phone service in our homes, such as the phone service we receive through our FTTN service and the ATA box we have at home that our phone is connected to?
I wasn't clear whether our home phone service would be down during the upgrade or not.
Yes, the voice switching infrastructure is related to all voice services we deliver. During this upgrade, members were unable to make or receive calls for almost five minutes, just prior to 3:00am last night. This maintenance window was timed to occur during our lowest usage time.