GSM7 returns a GSM 7-bit Bit Encoding.

IsValidGSM7String checks whether text can be encoded by gsm7.

ValidateGSM7Buffer Returns the bytes, in the given buffer, that are outside of the GSM 7-bit encoding range.

ValidateGSM7String Returns the characters, in the given text, that can not be represented in GSM 7-bit encoding.

EscapeSequence GSM 7-bit default alphabet and extension table Source: https://en.wikipedia.org/wiki/GSM_03.38#GSM_7-bit_default_alphabet_and_extension_table_of_3GPP_TS_23.038_/_GSM_03.38 */.

ErrInvalidByte means that a given byte is outside of the GSM 7-bit encoding range.

ErrInvalidCharacter means a given character can not be represented in GSM 7-bit encoding.