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CDR collectionCDR collection does storage of usage information in the forma of Call Detail Records from VoIP network infrastructure (SIP Proxies, VoIP gateways and Session Border Controllers).
SIPIn the SIP world there are different CDR types:
- Start and stop messages (which defines the beginning and end of a call)
- SIP messages (per transaction)
- SIP traces (per packet)
- Match information from SIP Proxy with call information from PSTN gateway (if call went to PSTN world)
- Match information from Session Border Controller for IP calls. As SBC stay in media path can always accurately determine when the last information was sent/received.
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