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31. How I can use characters from the GSM alphabet extension table in my application?
Answer:
The GSM 7-bit default alphabet extension table is defined in the "Digital cellular telecommunications
system (Phase 2+); Alphabets and language-specific information (GSM 03.38)" specification.
In CIMD user data parameters, the _XX special combination character (named Reserved) is reserved as an escape to an extension of the GSM 7-bit default alphabet table. If the receiving mobile station does not understand the meaning of this escape mechanism, it should display it as a space character.
The following characters are defined in an extension character table. The CIMD Reserved escape character and the second CIMD character are written immediately after each other in the CIMD user data parameter, with no white space separating the entities.
| Character name | |||
| Vertical bar | _XX_!! | Reserved, Inverted ! | |
| Caret | _XX_gl | Reserved, Greek Alphabet Lambda | |
| Euro symbol | _XXe | Reserved, Small Letter e | |
| _XX( | Reserved, Left Parenthesi | ||
| _XX) | Reserved, Right Parenthesis | ||
| _XXASCII(10) | Reserved, Line Feed (ascii 10) | ||
| _XX< | Reserved, Less than sign | ||
| _XX> | Reserved, Greater Than Sign | ||
| _XX= | Reserved, Equals Sign | ||
| _XX/ | Reserved, Slash |