Capacity limited devices may initiate real-time Internet protocol (IP) flows that may include voice data for voice calls. Talk-over patterns may be identified, and an IP flow may be modified based at least in part on the identified talk-over pattern. Such a modification of an IP flow may include, for example, dropping one or more downlink or uplink packets of the IP flow, modifying a semi-persistent scheduling (SPS) grant to suppress one or more uplink transmissions, or modifying a reliability target associated with the IP flow to reduce a number of redundant transmissions or number of retransmissions.