Aastra 9143i Series Administrator's Manual page 503

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
41-001160-03 Rev 00, Release 2.5
to save your changes.
Configuring Operational Features
Operational Features
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