Logue callid

Captures the callid of all requests passing through the role SIP.
Each role captures information in a different format that corresponds to the part of the process it provides in servicing calls in the system.

One node can contain no more than one SIP service role, and it is this role that generates this log.

Used among other things by the read system itself to expand the allowable time interval in which closures can be built. Used to collect logs on a call and plot the sequence diagrams.