Need some help in programming a Telrad 8/18 system and an emaGen Voicemail system.

I am able to update the emaGen Voicemail system via the web controller; however, the handsets do not update with the new information.

There is an RS232 connection between the emaGen Voicemail system and the Telrad 8/18 key system.

How do I update the changes to the handsets?

Is there some sort of commit changes thingy that needs to be done to the key system?

Thanks!