4 ms·
It's true that it's all packet-switched rather than circuit-switched, but IMS traffic is still handled differently than regular data traffic. (The most user-vis
by snazz 25d ago
It's true that it's all packet-switched rather than circuit-switched, but IMS traffic is still handled differently than regular data traffic. (The most user-visible implication of this is the QCI difference: cellular phone calls are much more reliable at poor signal strength and high congestion than over-the-top VoIP calls).
- wolvoleo 24d agoIsn't that just basic QoS?
- snazz 17d agoIt's a totally parallel IP stack that's handled differently on the device and the base station hardware. Being on a call will affect what frequency bands your phone uses, handoff behavior, carrier aggregation, and other things that over the top calls like WhatsApp audio wouldn't.