We are looking at implementing a voicemail solution within our organisation. Our organisation has 150 users so we would be looking at 100 mailboxes roughly. We have a Merdian Option 11c switch on release 3 with 2 ITG cards bolted on 1 in use one not. We want to use the Asterisk as just a voicemail solution only nothing else as we have everything else covered. What is the best way to connect the switch to the Asterisk? Any help on this would be much appreciated.