asterisk users - Jan 2004 - Message signaling on MGCP (light on the phone)

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 ? Is it a function we could use to force the status 
check and send it to the phone ? Does anyone knows how it works on Cisco 
phones ?

Thanks for any help

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