We are looking for a (customer)user and an admin interface using asterisk,to do the following.
DID # fowards to one or many extensions
Must be able to upload wav file for system greeting for each extension and or DID account.
Voicemail to one email or many and or text notification.
Fax to email as a pdf with notification via email
Email to fax using asterfax and or hylafax.
User interface should be able to see call useage and be able to configure call control /voicemail to email and text notification.
Trixbox has many of these feature but not all,this may be a start
to modify this config.