Mitel 6867i Administrator's Manual page 470

Mitel 6800 Series SIP Phone Release 4.2.0 Administrator Guide
CONFIGURING BLA SUPPORT FOR MWI USING THE CONFIGURATION
FILES
Use the following procedure to configure BLA support for MWI.
CONFIGURATION FILES
For specific parameters you can set in the configuration files, see Appendix A, the section,
Support for MWI"
CONFIGURING BLA SUPPORT FOR MWI USING THE MITEL WEB UI
Use the following procedure to configure BLA support for MWI.
MITEL WEB UI
1. Click on Advanced Settings->Global SIP->Advanced SIP Settings.
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"BLA