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Doubts on VoWiFi functionality .

+3 votes
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As per my knowledge Voice calling over WiFi is mainly deployed using ePDG over untrusted Wi-Fi network.

  1. Is the same is also possible on carrier Wi-Fi network using TWAG (EoIP/GRE + S2a), without using ePDG ??
    If yes, please share any reference or deployment architecture.
  2. Can UE come up with IMS APN instead of default APN during initial-attach ?
  3. Does IPSEC tunnel is pre-requisite for VoWiFi functionality?

Any help, pointers will be appreciated.

posted Apr 29, 2016 by Sarjit Singh

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