Download Multi-Protocol Correlation: Data Record Analyses and Correlator

Transcript
CHAPTER 3. PROPOSED SOLUTION
3.3.3
3
Megaco - Megaco Correlation
In Megaco - Megaco correlation there are a few important parameters in the proto-
col that needs to be paired with each other in order to perform a correct correlation.
Figure 3.5: A simple example Megaco - Megaco call flow.
In a more detailed and realistic network, there might be multiple MGCs and
even more MGs. In addition there are many other protocols, ISUP, and SIP that
comes onto the picture as well, because Megaco is a bridge protocol.
3.3.4
CAP - CAP Correlation
CAP - CAP can be Correlated on a parameter called Global Call Reference (GCR)
which is created at the Mobile Switching Service (MSC) where the call is initiated
3
The ideas on Megaco - Megaco correlation brought forth in this subsection are based on discussions with engineers at Utel Systems, and as such there are no references.
47