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Jon, We haven't had anybody else report this as of yet. We'd be interested in doing some more testing with you on this. Can you contact us off-list so we can setup a time to do a few tests and figure out of this is something we can open a ticket with AT&T on? -Nick --------------------------------------------------- Nicholas Kwiatkowski Communication Systems Engineer, Video and Voice Systems Telecommunication Systems Department Michigan State University Phone/SMS : +1 517-432-2528 Dept / Customer Service / Trouble: +1 517-353-5515 E-Mail: [log in to unmask]<mailto:[log in to unmask]> Website: www.telecom.msu.edu<http://www.telecom.msu.edu/> From: Galbreath, Jonathan [mailto:[log in to unmask]] Sent: Tuesday, December 09, 2014 9:55 AM To: [log in to unmask] Subject: [MSUNAG] MSU PBX and iPhone 6 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 [log in to unmask]<mailto:[log in to unmask]> 517-432-5350