Does anyone else with an iPhone 6 on AT&T receive calls from MSU numbers that show up as “Unknown” for the Caller ID? From what I can tell from my call log it started sometime after 10/29 as I logged several 884- numbers before that, but
since then any calls coming from the PBX have come through as Unknown.
I can confirm it’s an issue with calls originating from 884- and 432- numbers on the Avaya system.
I’ve seen posts on a couple forums that seem to indicate an issue between how AT&T handles Voice over LTE (VoLTE) and Caller ID information, but even if I turn off LTE completely it still shows Unknown for calls coming from the PBX.
Jon
Jon Galbreath, MCSE
IT Services
Vitualization, Systems, and Storage
517-432-5350