Digi ConnectPort X4 User's Guide download pdf (Page 118)

Configuration through the web interface

118

Supported Character Set

For SMS via GSM service, it is necessary to translate between the GSM 03.38 7-bit alphabet and

ASCII, which is the native character set for the Digi device and is the character set used in the CLI

and web UI.

The characters of ASCII and GSM 03.38 do not map one-to-one, and in fact some ASCII

characters must be represented in GSM 03.38 as multi-character escape sequences (per extensions

to the original GSM 03.38 alphabet). In the table below, such characters are shown as “0x1Bhh”

under the “GSM 03.38 Code” column. This notation indicates a two-character sequence, where

“hh” is a pair of hexadecimal digits.

In the reverse translation (from GSM 03.38 to ASCII), some of the GSM 03.38 characters have no

ASCII counterpart. These are replaced with ASCII space characters. One exception is the

INVERTED QUESTION MARK (0x60 in GSM 03.38) which is replaced with an ASCII

QUESTION MARK (0x3F) character.

The following table documents the supported characters and the mapping used between these two

alphabets. Note that “unknown” characters are replaced with space characters during the

translation. In the table below, such characters are shown as “0x20 *” under the “GSM 03.38

Code” column.

Notes for the table:

(1) The GRAVE ACCENT character (0x60) in ASCII has no counterpart in GSM 03.38. A

substitution is made using the APOSTROPHE (0x27) in its place.

* The characters marked with * indicate a substitution since the ASCII characters have

no counterpart in GSM 03.38. These characters are replaced with the SPACE (0x20)

character. As such, these characters are not supported in the Digi product support of

GSM short messages.

1 2 ... 113 114 115 116 117 118 119 120 121 122 123 ... 270 271

No comments

Digi ConnectPort X4 User's Guide Page 118