[asterisk-users] Voicemail & CallerID

[Peder at NetworkOblivion]

I've got a question about voicemail and callerid and I can't quite 
figure it out. I've got extensions 100, 101 and 102.  For outbound 
callerID (calls from the phones to the PSTN), I want the callerid to say 
100 on all phones, so under sip.conf, I added:

callerid="Bill" <100>

The problem is that when they go to check voicemail, it looks at their 
callerID and it drops them into mailbox 100 (calls to them still go into 
their own specific mailbox, it is just when they hit their messages 
button).  Any idea how to get around that?  Or do I just have to send 
them to voicemail without having it automatically enter their extension?

This is what my voicemail does:
exten => 3299,1,VoicemailMain(${CALLERIDNUM})