Fix the Asterisk voicemail module memory leak that caused frequent crash and restart:
The leak in the polling thread (that goes to the IMAP server to refresh mailbox states) ultimately depleted the whole memory. This caused a crash as well.

Add VCC queues to IVR editor

Conference bridge enhancement:

• Joining user announcement process when Announce Callers is configured is too cumbersome. Skip the announcement review process (press 1 to accept, 2 to retry, etc.). The caller announcement is accepted without a review.

Make C3Voice including Asterisk DB backup script following the similar we did for VCC

Place two professional quality C3 Logos into Web portal pages as specified by the stakeholders.Extension Dialing Ring Duration:
a. Change the current system param value from 40 to 30 secs.
b. Make it a Service parameter (default = system param value) so that an Admin can change it.
Add DTMF ‘0’ to IVR Menu Choice template, including proper handling of the extension dialing 0XXX if exists.