Since the final SDK is out now, I've been browsing through the packages included and it seems hard to get this in to the messaging ui as this seems to be closed (http://maemo.org/packages/view/rtcom-messaging-ui/).

I assume the other package which is interesting for us would be libtelcommon0 (only reference I've found so far to telephony) http://maemo.org/packages/view/libtelcommon0/ (closed as well).

On the other hand the rtcom-eventlogger does contain MMS as one of its default services...