User's Manual
422
Document #: LTRT-89729
Mediant 3000
28.8.1.2 Local Handling of SIP 3xx
The device can handle SIP 3xx responses on behalf of the dialog-initiating UA and retry the
request (e.g., INVITE) using one or more alternative URIs included in the 3xx response.
The new request includes SIP headers from the initial request such as Diversion, History-
Info, P-Asserted-Id, and Priority. The source and destination URIs can be manipulated
using the regular manipulation mechanism.
The device sends the new request to the alternative destination according to the IP-to-IP
Routing table rules. (where the 'Call Trigger' field is set to
3xx
). It is also possible to specify
the IP Group that sent the 3xx request as matching criteria for the re-routing rule in this
table ('ReRoute IP Group ID' field).
28.8.2 Interworking SIP Diversion and History-Info Headers
This device can be configured to interwork 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:
Handling of SIP Diversion and History-Info Headers
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 removed.
HistoryInfoMode =
Remove
DiversionMode = Add
Not present.
History-Info
converted to
Diversion.
History-Info
removed.
History-Info added to Diversion.
History-Info removed.
HistoryInfoMode =
Disable
DiversionMode = Add
Diversion
converted to
History-Info.
Not present.
Diversion added to History-Info.
HistoryInfoMode =
Disable
DiversionMode = Add
Not present.
History-Info
converted to
Diversion.
History-Info added to Diversion.
HistoryInfoMode = Add
DiversionMode = Add
Diversion
converted to
History-Info.
History-Info
converted to
Diversion.
Headers are synced and sent.
Summary of Contents for Mediant 3000
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Page 27: ...Part I Getting Started with Initial Connectivity...
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Page 41: ...Part II Management Tools...
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Page 103: ...Part III General System Settings...
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Page 113: ...Part IV General VoIP Configuration...
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Page 275: ...Part V Gateway and IP to IP Application...
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Page 399: ...Part VI Session Border Controller Application...
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Page 465: ...Part VII Stand Alone Survivability Application...
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Page 497: ...Part VIII IP Media Capabilities...
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Page 501: ...Part IX High Availability System...
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Page 515: ...Part X Maintenance...
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Page 565: ...Part XI Status Performance Monitoring and Reporting...
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Page 609: ...Part XII Diagnostics...
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Page 639: ...Part XIII Appendix...
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Page 871: ...Version 6 6 871 Mediant 3000 User s Manual 55 Selected Technical Specifications Reader s Notes...