asterisk users - Jun 2007 - Replacing SX-2000 Centigram Voicemail with Asterisk?

We have a customer with an obsolete Centigram voicemail system who would 
like to replace it with Asterisk.

Any one with experience doing this or information on the signalling and 
trunking used to connect the Mitel SX-2000 to the Centigram server?

-- 
George Pajari (dCAP), netVOICE communications 604 484 VOIP(8647) x102
                 www.netvoice.ca  www.ip-centrex.ca
     www.digium.ca www.grandstream.ca www.sipura.ca www.snom.ca
Open Source VoIP/Telephony Specialists  1 877 NET VOIP (638 8647 x102)