Version 7.2 239 Mediant 800B Gateway & E-SBC
User's Manual 15. Services
Figure 15-6: Multiple SRSs (Standalone and Redundancy)
Note: SRS redundancy is a license-dependent feature and is available only if it is
included in the License Key installed on the device. The license defines the maximum
number of recorded calls that can be supported for SRS redundancy. For example,
assume that your deployment has one standalone SRS and one SRS redundancy
group and you want to record 100 call sessions. For the regular SIPRec license, you
would need to order 200 SIPRec sessions (100 for the standalone SRS and 100 for
the active SRS in the SRS redundancy group). For the SRS redundancy license, you
would need to order 100 SIPRec Redundancy sessions to enable the SRS
redundancy feature and support the number of recorded sessions
. For more
information and for ordering the feature, please contact your AudioCodes sales
representative.
The device initiates a recording session by sending an INVITE message to the SRS when
the recorded call is connected. The SIP From header contains the identity of the SRC and
the To header contains the identity of the SRS. The SDP in the INVITE contains:
Two 'm=' lines that represent the two RTP/SRTP streams (Rx and Tx).
Two 'a=label:' lines that identify the streams.
XML body (also referred to as metadata) that provides information on the participants
of the call session:
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