title: decode 7-bit GSM
body: <p>I found this <a href="https://stackoverflow.com/questions/2452861/python-library-for-converting-plain-text-ascii-into-gsm-7-bit-character-set">post</a> on how to encode ascii data to 7-bit GSM character set, how would I decode 7-bit GSM character again (reverse it back to ascii)?</p>