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SIP Release Notes 58 Document #: LTRT-26901
CPE SIP Products
10. Mediation without Transcoding:
Product
MP-11x MP-124
Mediant 600 Mediant 1000
Mediant 800 MSBG Mediant 1000 MSBG
Mediant 2000
Mediant 3000/TP-6310 Mediant 3000 HA/TP-6310
Mediant 3000/TP-8410 Mediant 3000 HA/TP-8410
Management Protocol
Web INI
SNMP
EMS
CLI
This feature provides support for mediation without transcoding. The device
transparently relays RTP traffic (through Digital Signal Processing/DSP) and the
following features are supported:
• SRTP-RTP, SRTP tunneling
• Remote media NAT traversal (RFC 4961)
• Broken connection notification
• RTCP XR statistics
• Rogue RTP filtering
11. Interworking SIP Diversion and History-Info Headers:
Product
Mediant 800 MSBG Mediant 1000 MSBG
Mediant 3000/TP-6310 Mediant 3000 HA/TP-6310
Mediant 3000/TP-8410 Mediant 3000 HA/TP-8410
Management Protocol
Web INI
SNMP
EMS
CLI
This feature provides support for interworking between the SIP Diversion and History-
Info headers. This is important, for example, to networks that support the Diversion
header but not the History-Info header, or vice versa. Therefore, mapping between
these headers is crucial for preserving the information in the SIP dialog regarding how
and why (e.g., call redirection) the call arrived at a certain SIP UA.
This feature is configured in the IP Profile table (IPProfile parameter) using the
following new parameters:
• SBCDiversionMode - defines the device’s handling of the Diversion header:
• SBCHistoryInfoMode - defines the device’s handling of the History-Info header:
The handling of the SIP Diversion and History-Info headers is described in the table
below:
Parameter Value
SIP Header Present in Received SIP Message
Diversion
History-Info
Diversion and
History-Info
HistoryInfoMode = Add
DiversionMode =
Remove
Diversion
converted to
History-Info.
Diversion
removed.
Not present.
Diversion added to
History-Info.
Diversion removed.