Advanced Operational Features
41-001160-00, Release 2.1, Rev 04 6-17
Configuring Advanced Operational Features
Advanced Operational Features
Blacklist Duration (Broadsoft Servers)The Blacklist Duration feature on Broadsoft Servers 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 Aastra Web UI. The default setting is 300 seconds. 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
Configuration Files
For the specific parameters you can set in the configuration files for setting Blacklist Duration, see Appendix
A, the section, “Transport Layer Security (TLS) Settings” on pageA-72.