Type 2 : Voice Continuation

 ┌────┬──┬──┬──┬─----------─┐
 │ 02 │ BLKLEN │ VOICE DATA │
 └────┴──┴──┴──┴─----------─┛

 This sub-block is a continuation of the voice data from the last Voice
 Data sub-block.

 The length of the voice data is BLKLEN.