The Modular Messaging Adapter (Modular Messaging Adapter) adaptation module is required only if you have the following elements:
Session Manager Release 6.1.2 and later.
Modular Messaging system with software earlier than release 5.2 Service Pack 7.
A SIP entity that uses one of the other adaptations as listed above and that uses Modular Messaging as its voice messaging system.
You do not need this adaptation if the only entity in your network that can send calls to Modular Messaging is Communication Manager.
In Session Manager Release 6.1.2 and later, the CS1000 Adapter and other adaptation modules convert from Diversion to History-Info output. This History-Info format contains call forwarding diversion information instead of what looks like Communication Manager coverage history-info which can be interpreted correctly by Modular Messaging 5.2 Service Pack 7 and higher.
The Modular Messaging Adapter converts this History-Info into a format that looks like the information came from Communication Manager to indicate a covered call, which conforms to the History-Info format supported by earlier releases of Modular Messaging.