Dedicated Bearer Call Flow
Following call flow changes happen during:
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Dedicated Bearer Flow Creation: While creating dedicated bearer in 4G, SMF sends N4 modify with source interface type as S5-U in uplink PDR create.
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Additional 5G Call Flow Creation: While creating additional flows in 5G, SMF sends N4 modify with source interface type as “N3 3GPP Access” in the uplink PDR create.