Aastra 9143i Release Notes page 13

Issue Number Description of Fix
CLN10876 When the phone is ACKing a second 200ok with different To-Tag, it now works as expected.
DEF09578 57i: RTP Multicast Paging no longer drops handset audio.
DEF10644 When pressing multiple keys at once in the call forward settings, the phone now works as expected.
DEF10703 The phone now works as expected when receiving a call with a very long display name.
DEF10743 Selecting theTime Server Option menu item now works as expected.
DEF10840 Phone no longer hangs when TURN and Call Forward enabled on the phone.
RN-001029-02, Release 2.3.1, Rev 01
SIP IP Phone Models 9143i, 9480i, 9480i CT and 5i Series Phones Release Note 2.3.1
Issues Resolved in Release 2.3.1
9