Mitel 6800 Series, Administrator'S Manual, Page: 606 / 1113

Mitel 6800 Series SIP Phone Release 4.2.0 SP2 Administrator Guide
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5.
In the “
As-Feature-Event Subscription Period
” field, enter the amount of time, in seconds,
that the phone waits after sending a SUBSCRIBE, to receive a NOTIFY response from the
server side. Default is 3600.
6.
Click
Save Settings
to save your changes.
BLACKLIST DURATION
The Blacklist Duration feature helps to reduce unnecessary delays during proxy/registrar server
failures, caused by the IP phone repeatedly sending SIP messages to a failed server. If you
enable this feature, then whenever the IP phone sends a SIP message to a server, and does
not get a response, the phone automatically adds the server to the blacklist. The IP phone
avoids sending messages to any servers on the blacklist. If all servers are on the blacklist, then
the IP phone attempts to send the message to the first server on the list.
You can specify how long failed servers remain on the blacklist in the IP phone’s configuration
file or in the Mitel Web UI. The default setting is 300 seconds (5 minutes). If you set the duration
to 0 seconds, then you disable the blacklist feature.
CONFIGURING BLACKLIST DURATION USING THE CONFIGURATION
FILES
Use the following parameter to configure the Blacklist Duration in the configuration files:
•
sip blacklist duration
For the specific parameters you can set in the configuration files for setting Blacklist Duration,
see Appendix A, the section,
“Blacklist Duration Setting” on
page A-288
.
CONFIGURING A SERVER BLACKLIST USING THE MITEL WEB UI
You use the following procedure to configure Blacklist Duration using the Mitel Web UI.
CONFIGURATION FILES
MITEL WEB UI