From: Kapil Dhawan Sent: Tuesday, April 12, 2005 5:21 AM
When CALL-ID is considered to be a globally unique
identifier, then why do
we describe one dialog with a combination of CALL-ID, TO tag and FROM tag.
... because of forking. In this case the different early dialogs have the
same CALL-ID and FROM tag but a different TO tag.
Franz