I do not see a way to customize the voice mail greeting.
Add a feature where you could leave yourself a VM message, then using the Call Log move that file (1/phone number of device) to a folder called VM Greeting to identify that .wav file for use in the greeting.
This would allow each line/device to have personalized email and an easy interface way to update it.
Telo with 2 Handsets, a Linx, and a Safety Phone
Telo2 with 2 Handsets and a Linx
See here for all the keys:
http://forums.ooma.com/viewtopic.php?f= ... ail#p15475