[asterisk-users] Erratic Snom MWI lights

[McGhee, Stefano]

> Snom's ...
> Retrieve button... works when MWI is *NOT* lit but does *NOT* 
> work when 
> it is lit.
> 
> Any advice

Do you have an "asterisk" extension in your dialplan?  See
http://www.voip-info.org/wiki-Asterisk+phone+snom, especially the part
about:

Making the MWI work with ASTERISK
Asterisk sends notifications on voicemail messages (if you configured
the mailbox option in sip.conf. The messages are sent by default from
"asterisk at yourlocalserver.com", which can be modified using vmexten= in
sip.conf. When pressing the MWI or Vmail soft button on the SNOM phones
the phone calls this extension to connect to the voicemail application.
If you haven't configured an extension named "asterisk" in the context
of the phone, the MWI/VMail button will not work.

Cheers,

Stefano