[Asterisk-Dev] MWI From tag in SIP message

[Kevin P. Fleming]

Olle E. Johansson wrote:

> I would say that the core problem is that we send NOTIFY messages
> WITHOUT a preceeding SUBSCRIBE for notifications, so there's no
> transaction to match. The NOTIFY has nothing to do with the actuall call
> to voicemail, but should be related to a subscription... Well, it works
> anyway with a lot of phones and ignoring it is ok and propably a correct
> way of handling it.

Agreed, although we will need to always continue to support the 'push' 
method of MWI as well, since most phones do seem to support it properly.