On Fri, 2009-07-17 at 13:30 -0500, Danny Nicholas wrote: > In some cases MWI is referred to (perhaps incorrectly) as BLF. Try > searching on that.
MWI and BLF are two separate and distinct items. The only thing they have in common is that they both deal with lighting up little lights on a handset. MWI is Message Waiting Indication, where Asterisk sends a SIP NOTIFY message to a to a phone to let the phone know that there is new voicemail in the mailbox corresponding to that SIP device. (You set the corresponding mailbox by setting "mailbox=1...@default" in the peer or friend definition in sip.conf, where 1234 is the mailbox, and default is the voicemail context or section name in voicemail.conf.) BLF stands for "Busy Lamp Field". BLFs are used for *all kinds* of different things, but most often they're used for monitoring extension state of another extension. To make this work, you create a dialplan hint for the device in question to map an extension state to a device state and then make sure that call limits are enforced in the SIP channel driver (so that it keeps track of device state. The phone with the BLF will then SUBSCRIBE to the status of the hint, and then when the extension state changes, Asterisk will send a SIP NOTIFY to the phone to let it know that the subscribed hint has changed states. I know you're only trying to help, but please don't muddy the water by telling people that MWI and BLFs are the same thing. -- Jared Smith Training Manager Digium, Inc. _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users