13. Digi Call Flows



 13. Call Flows

  • Internet APN connection, to be done 1st

  •   Activation of ims APN and SIP Registration, done after the connection to internet APN is completed


  • VoLTE call using SIP Preconditions:



  • Wireshark flows:
VoLTE Registration to IMS

VoLTE NB-AMR call (non HD) using SIP Preconditions



VoLTE WB-AMR (HD) announcement played by the network

VoLTE call to a ported number from another network; Ported WB-AMR announcement(beep) and afterwards the call is connected using NB-AMR codec; no WB-AMR interconnection between Romanian operators.


03.08.2018 New call flow towards ported numbers from ORO.


05.08.2018 Break out calls - call towards Orange Romania, VoWiFi, VoLTE, no preconditions
2 AARs:  at Invite and 183 -hmmm


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