Aastra Telecom 9480i Series - Manual (Page 498)

Operational Features
5-200 41-001160-03, Rev 00, Releaes 2.4
IP Phone Administrator Guide
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, “Advanced SIP Settings” on page A-92.
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