AudioCodes Mediant 4000 SBC User Manual page 802

Session border controllers

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CHAPTER 51 Reporting Information to External Party

Signaling CDRs: This CDR contains SIP signaling information. A typical SBC session

consists of two SBC legs. Each leg generates its own signaling CDRs. Each leg

generates three different CDR Report Types (CDRReportType), which are sent to the

CDR server at different stages of the SIP dialog:

The CDR Report Types for SBC signaling and the SIP dialog stages are shown in the

following figure:

CDRs belonging to the same SBC session (both legs) have the same Session ID (SessionId

CDR field). CDRs belonging to the same SBC leg have the same Leg ID (LegId CDR field)

For billing applications, the CDR that is sent when the call ends (CALL_END) is usually

sufficient and it may be based on the following CDR fields:

Destination URI

Call originator (i.e., caller)

Call duration

The Syslog displays CDRs in tabular format, whereby the CDR field names are displayed on the

first lines and their corresponding values on the subsequent lines, as shown in the example below

of an SBC signaling CDR sent at the end of a normally terminated call:

Figure 51-1: SBC CDR Report Types for Media

"CALL_START": CDR is sent upon an INVITE message.

"CALL_CONNECT": CDR is sent upon a 200 OK response (i.e., call is established).

"CALL_END": CDR is sent upon a BYE message (i.e., call ends)

Figure 51-2: CDR Report Types for SBC Signaling

Mediant 4000 SBC | User's Manual

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