High Availability:Software:CDR
From TBwiki
The CDRs are another critical section of a system. Toolpack can generate 2 types of CDRs: RADIUS and text based CDRs.
RADIUS
Starting with version 2.6, Toolpack can send CDR to multiple RADIUS servers. Accounting requests will be sent to the first server until it stops responding. Once this happens, Toolpack will send the requests to the second server.
Text Based CDRs
Only the active instance of the gateway application will write the CDR information locally on the host. When there is a switchover the newly active gateway application will write the CDR locally on its host. To gathered all the CDR information, it is important to read the CDR from both hosts.
