MSS stable versions are upgraded to V3.1.6 (build 20110813).

This version is upgraded to support voice mail nesting follow-me services. When a local extension has been configured with voice mail and following me services, the voice mail service will be triggerred if all follow-me parties don’t answer the incoming call.

Some bugs in web management are also fixed at the same time.

These modifications have been merged to V4 latest version.