Table 8-6: Handling Of Sip Diversion And History-Info Headers - AudioCodes Mediant 800 MSBG User Manual

SIP User's Manual
8.4.8 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:

Table 8-6: Handling of SIP Diversion and History-Info Headers

Parameter Value
HistoryInfoMode = Add
DiversionMode = Remove
HistoryInfoMode =
Remove
DiversionMode = Add
HistoryInfoMode =
Disable
DiversionMode = Add
HistoryInfoMode =
Disable
DiversionMode = Add
HistoryInfoMode = Add
DiversionMode = Add
HistoryInfoMode =
Remove
DiversionMode = Remove
Version 6.2
SIP Header Present in Received SIP Message
Diversion
Diversion Not present
converted to
History-Info.
Diversion removed.
Not present. History-Info
converted to
Diversion.
History-Info
removed.
Diversion Not present.
converted to
History-Info.
Not present. History-Info
converted to
Diversion.
Diversion History-Info
converted to converted to
History-Info. Diversion.
Diversion removed. History-Info
removed.
505
8. IP Telephony Capabilities
History-Info Diversion and History-Info
Diversion removed.
History-Info added to Diversion.
History-Info removed.
Diversion added to History-Info.
History-Info added to Diversion.
Headers are synced and sent.
Both removed.
February 2011