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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"GSM-7 encoding is actually GSM-8?","articleBody":"Hi,\r\n\r\nI think smpplib's GSM-7 encoding is only encoding to GSM-8, but not doing the byte-packing step to convert to GSM-7.\r\n\r\nHere's an example:\r\n\r\nFor an SMS containing \"This is a test SMS from wave: é à É ô\" we get this PDU in the logs: `000000550000000400000000000004b40005005741564500010032323530323132313630360000000000000100000025546869732069732061207465737420534d532066726f6d20776176653a2005207f201f206f`\r\n\r\nTaking the trailing bytes of that and converting back from hex we get:\r\n\r\n```\r\nIn [5]: binascii.unhexlify(\"546869732069732061207465737420534d532066726f6d20776176653a2005207f201f206f\")\r\nOut[5]: b'This is a test SMS from wave: \\x05 \\x7f \\x1f o'\r\n```\r\n\r\nWhich is mostly ascii, and so can't be a 7-bit encoding. I also can't find any code in smpplib which looks like it does the byte-packing.\r\n\r\nMaybe I'm using smpplib incorrectly?","author":{"url":"https://github.com/davidshepherd7","@type":"Person","name":"davidshepherd7"},"datePublished":"2020-08-26T14:33:24.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/123/python-smpplib/issues/123"}