Finally, we could not use one of the newer features of GSM, national language shift tables, as the telephone company did not support them either.ĭoing a standard conversion to from UTF-8 to GSM-7 would be ‘lossy’ in that the characters which did not exist in GSM-7, but did exist in UTF-8 could not be represented. We could not use other encodings which did support the Portuguese language, such as UCS-2/UTF-16 as the telephone company did not support them.
We could not very well just ask people to not send Portuguese-language specific characters which did not exist in GSM-7 - that would be tacky and very user-unfriendly.
The challenge was to send Portuguese language SMS messages from the SME Toolkit to end-user mobile handsets via the telephone company without rendering the SMS message unreadable. The Portuguese language utilizes characters which are not represented in the 7-bit GSM Default Alphabet, yet GSM-7 was the only way we could communicate SMS messages to the telephone company. The challenge arose from the fact that, internally, the SME Toolkit uses the UTF-8 encoding scheme, and we were trying to communicate Portuguese language messages. Recently, we experienced the challenge of needing to communicate SMS messages to a telco utilizing the 7-bit GSM Default Alphabet. As blogged about previously, the SME Toolkit has a feature which allows integration with telephone companies to send SMS messages via the SMPP protocol.
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