Is it mandatory to establish a separate default bearer to exchange IMS signaling messages between UE and IMS network nodes ? Can't internet default bearer be used for the same ?
Internet PDN is different and IMS PDN is different so we need different default bearer for the IMS connection.
Default bearer is per pdn not per UE so ims pdn is different and internet pdn is different so two default bearer is required.
QCI 5 is mandatory for IMS SIP Signalling? What If Network assign different QCI (Say 6 or 8) for IMS Default Bearer? Will SIP Signalling still flow?
Which of the network node initiates dedicated bearer creation for the VoLTE call ?