Tricks to get BLF working in Asterisk appliance
BLF can be tricky to get working with asterisk. After version 1.2 there are some interim releases that break the functionality.
Digium appliance:
tested with the appliance running version autotag_for_sx00i-1.0.1 (sx00iRC1-2007-07-05 interim)
First click on Options and then in the advanced tab, that will make the file editor show up in the menu.
Go to SIP Global menu and modify the subscribe notify part:

In the users.conf file enter the following:
call-limit=20
subscribecontext=

Don’t worry about the “hint”. I neither find the “hint” entries configured in any of the conf files nor had to enter them manually.
Don’t forget to activate the changes.
Snom Ip phones:
tested version 6.5.10
under advanced configure: Use user:phone with off; Filter packets from registrar with off.
under Function Keys configure the buttons: Context with the line to be used; Type as extension; Number with the extension number to monitor.

Aastra IP phones:
tested version 2.0.1.2000
Configure the sip acount as Line, NOT as Global.
under keys configuration set buttons: Type as BLF; Value with the extension number to monitor; Line should be set to line configured with sip account.

To make sure everything is ok here are some related commands and output:

Henry

