Open Source - Does Asterisk roll-over to G729 software license when TC400 is at max capacity

Currently this feature is not supported by Asterisk. 

When transcoding is requested by a channel driver (such as chan_sip  or chan_dahdi), the Asterisk core will evaluate what is the most efficient transcoding  path, and it will follow through.

If an error occurs along this path, Asterisk will consider the transcoding not posible and it will report the problem to the channel driver. 

Asterisk will not make any attempt to regenerate the path using a different , less efficient resource. Although Asterisk supports multiple modules with the same function, only one module (the most efficient) will be used all the time.