Cisco Cisco Packet Data Gateway (PDG)
WiFi to LTE Handoff with Dedicated Bearer (UE initiated)
When a VoLTE call is ongoing, the P-GW will install the bearers on the LTE network using piggyback
procedure.
procedure.
Figure 19: WiFi to LTE Handoff with Dedicated Bearer - Part 1
ePDG Administration Guide, StarOS Release 19
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Evolved Packet Data Gateway Overview
WiFi to LTE Handoff with Dedicated Bearer (UE initiated)