Having the following problems with 3CX for iOS. Running 3cx V15 with all latest updates - linux install. Running 3cx Client for iOS V 220.127.116.11 Having the following problems on an ongoing basis. Call Extension (Desk Phone) they hear no audio for a couple seconds after picking up happens probably 80% of the time. If on the phone with one extension and another calls in if call is not answered both calls will drop once second caller hangs up. Happens 90% of the time Often the iOS app will stop working where no calls come in or if they do no audio either direction and calling out does not work even though status says registered. 3cx Server is on a gigabit fiber line sip trunking provided by vitelity. Remote users are on cable lines 100mbs down 25mbs up. When it works it works great hoping someone has a fix or work around to get better performance.