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I’m trying to measure post dial delay between IMS client with different medium transport.
What I’ve got is:
When caller is using HSDPA(up 384 kbps. down 3,6 kbps) & receiver is using EDGE, it has more PDD than caller EDGE and callee HSDPA.
Does anyone know how this could have happened?
It has to be have the same PDD, Isn’t it?
I don’t see why the PDD would be related to network transport at all. More than likely the PDD is related to whatever processing your carrier’s billing and routing servers need to do before putting the call through.
If your IMS client is using SIP, as you allude to in the tags on the question, then relatively speaking the call request packet is so small that the transmission time over any network transport is likely to be negligible.