For users in the states with Rogers, and absolutely need to be able to make calls, the best option is likely a pay sim card, or to use any wifi around (whatsapp can be used for calls).
There is no garantee of such an outage being fixed soon. Facebook had a similar outage and their outage was around 6 hours, but as this is an actual telecom provider, this may take significantly longer to resolve. Could be one extra hour, could be days depending on just how involved the rebuilding and reconfiguring the routers are.
https://socprime.com/blog/what-is-bg...%20unreachable.