[Asterisk-Users] Voicemail notification

[Gary]

On 11 Jun 2003 16:53:24 -0500, Steven Critchfield wrote:

>On Wed, 2003-06-11 at 15:16, Derek Beaumont wrote:
>> Besides email notification, is there another way to get asterisk notify
>> the user that they have a message?
>> 
>> Example:  Some analog phones have a blinking light that lets the user
>> know that they have a voicemail message.
>> Is asterisk capable of doing this?
>
>Yes, and I know it works on Sip and Zap channels. Check archive for MWI,
>for Message waiting indicator.
>-- 

But which "lighting" system is it ?

locally we have identified 3 different type ?
.