Aastra 6730i Administrator's Manual page 418

Operational Features
BLA Subscription Period
The IP Phones include a SIP BLA subscription period parameter that allows an Administrator to set the amount of time,
in seconds, of the BLA subscription period.
If this parameter is set to zero (0), the phone uses the value specified for the BLA expiration in the subscribe message
received from the server. If no value is specified in the Subscribe message received from the server, the phone uses the
default value of 300 seconds.
You can configure this parameter using the configuration files or the Aastra Web UI.
Configuring the BLA Subscription Period
Use the following procedures to configure the BLA Subscription Period.
Configuration Files
To configure the BLA subscription period on the IP phones using the configuration files, see Appendix A, the section,
page A-82.
Aastra Web UI
1.
Click on Advanced Settings->Global SIP->Advanced SIP Settings.
2. In the "BLA Subscription Period" field, enter a value, in seconds, that the phone waits to receive a BLA subscribe message from the server.
If you specify zero (0), the phone uses the value specified for the BLA expiration in the subscribe message received from the server. If no
value is specified, the phone uses the default value of 300 seconds. Valid values are 0 to 3700. Default is 300 seconds.
3. Click Save Settings to save your changes.
5-177
"Advanced SIP Settings" on
41-001343-02 REV05 – 07.2014