[Asterisk-Users] Message signaling on MGCP (light on the phone)

[Philipp von Klitzing]

Hi!

> Using the mailbox=... in mgcp.conf, Asterisk will tell the phone if 
> there is any voicemail or not. This status is called "vmwi", and it 
> works well.
> 
> Therefore, the vmwi status is got only when the phone makes a 
> transaction (ie. take a line and release it). At no time Asterisk sends 
> the status to the phone while a voicemail incomes.
> 
> Does anyone have any information about this ? Is it the same with SIP or 
> other protocols ?

See http://bugs.digium.com/bug_view_page.php?bug_id=0000667

SIP is different and works as you would expect it, i.e. the phone is 
immediately notified of new message _without_ requiring any user 
interaction.

Philipp