Hi,
we're facing an issue with MWI and Cisco TSP x64 (on CUCM 8.5.1 SU2). It seems that the usual extended API CCiscoLineDevSpecificMsgWaitingDirn doesn't work under 64 bit Windows system.
 
For example, using the sample application available on the CDN on a 32 bit Windows environment, we are able to properly turn ON and OFF MWI on a directory number. But, using the same exe on a 64 bit Windows (Server 2008 R2), after installing x64 TSP, it simply doesn't work.
 
Looking into Cisco TSP log, we can see:
18:07:18.922 |   CSelsiusTSPLine:evSpecific() [0x0000000A] *ERROR* dwSize missmatch 0x00000008
 
Any clues?
 
Thank in advance.