MaxWaitTime
MaxWaitTime indicates the duration (number of milliseconds since the Origination Time Stamp has lapsed) during which the originator of the request waits for the response.
MME/SGSN and TWAN/ePDG contain the MaxWaitTime IE on S11/S4 and S2a/S2b interfaces, respectively.
SGW contains the MaxWaitTime IE on the S5/S8 interface.