[Asterisk-Users] Cisco 7960 / SIP & tftp configs

[Asterisk User Group]

I have three questions about my 7960 phone that I can't discern from the 
docs/wiki.

1st - If I change the SIPxxxxxx.cnf file to change registrations it sets 
up new lines as expected. If I delete a line it doesn't get removed when 
I reboot the phone. I have to go to the phone, unlock it, and reset the 
SIP parameters. How do I make it "forget" what it has programmed and 
listen only to the download?

2nd - Has anyone figured out how to get the Message button to launch a 
dial to VoicemailMain?

3rd - How do I display on the LCD an alias to the registered line?
line1_name: 2000
line1_authname: "2000"
line1_password: ******

The doc seems to suggest that line1_name is what it registers with and 
line1_authname is what it uses "if challenged during the 
authentication". This doesn't make any sense to me. I am looking for the 
line to be "2000" but the display to say "Home" or "Business", etc.

Thanks, dbc.