User's Manual
1214
Document #: LTRT-10375
Mediant 500 MSBR
[SBCSessionExpires]
Minimum Session-
Expires
configure voip > sbc
settings > min-session-
expires
[SBCMinSE]
Defines the minimum amount of time (in seconds) between session
refresh requests in a dialog before the session is considered timed out.
This value is conveyed in the SIP Min-SE header.
The valid range is 0 (default) to 1,000,000, where 0 means that the
device does not limit Session-Expires.
configure voip > sbc
settings > sbc-session-
refresh-policy
[SBCSessionRefreshing
Policy]
Defines the SIP user agent responsible for periodically sending refresh
requests for established sessions (active calls). The session refresh
allows SIP UAs or proxies to determine the status of the SIP session.
When a session expires, the session is considered terminated by the
UAs, regardless of whether a SIP BYE was sent by one of the UAs.
The SIP Session-Expires header conveys the lifetime of the session,
which is sent in re-INVITE or UPDATE requests (session refresh
requests). The 'refresher=' parameter in the Session-Expires header
(sent in the initial INVITE or subsequent 2xx response) indicates who
sends the session refresh requests. If the parameter contains the value
'uac', the device performs the refreshes; if the parameter contains the
value 'uas', the remote proxy performs the refreshes. An example of
the Session-Expires header is shown below:
Session-Expires: 4000;refresher=uac
Thus, the parameter is useful when a UA does not support session
refresh requests or does not support the indication of who performs
session refresh requests. In such a scenario, the device can be
configured to perform the session refresh requests.
[0]
Remote Refresher = (Default) The UA (proxy) performs the
session refresh requests. The device indicates this to the UA by
sending the SIP message with the 'refresher=' parameter in the
Session-Expires header set to 'uas'.
[1]
SBC Refresher = The device performs the session refresh
requests. The device indicates this to the UA by sending the SIP
message with the 'refresher=' parameter in the Session-Expires
header set to 'uac'.
Note:
The time values of the Session-Expires (session refresh interval)
and Min-SE (minimum session refresh interval) headers can be
configured using the SBCSessionExpires and SBCMinSE parameters,
respectively.
User Registration Grace
Time
configure voip > sbc
settings > sbc-usr-reg-
grace-time
[SBCUserRegistrationGr
aceTime]
Defines additional time (in seconds) to add to the registration expiry
time of users that are registered with the device.
The valid value is 0 to 2,000,000. The default is 0.
For more information, see Registration Refreshes on page 635.
SBC DB Routing Search
Mode
configure voip > sbc
settings > sbc-db-route-
mode
[SBCDBRoutingSearch
Mode]
Defines the method for searching a registered user in the device's User
Registration database when a SIP INVITE message is received for
routing to a user. If the registered user is found (i.e., destination URI in
INVITE), the device routes the call to the user's corresponding contact
address specified in the database.
[0] All permutations = (Default) Device searches for the user in the
database using the entire Request-URI (user@host). If not found, it
searches for the user part of the Request-URI. For example, it first
searches for "4709@joe.company.com" and if not found, it searches
Summary of Contents for Mediant 500 MSBR
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Page 137: ...Part IV General VoIP Configuration ...
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Page 455: ...Part V Gateway Application ...
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Page 837: ...Part X Status Performance Monitoring and Reporting ...
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Page 927: ...Part XI Diagnostics ...
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Page 977: ...Part XII Appendix ...
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