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SDCP Operation
3-17
3166-A2-GB20-10
November 1998
The set of valid characters for control of the carrier external COM port device is
as follows:
H The numbers: 0–9
H The lowercase letters: a–z
H The uppercase letters: A–Z
H The space (“ ”) character
H The ASCII symbols (in ascending order, based on the ASCII code)
H The End Of Line (EOL) symbol: ←
H The caret (‘‘^”) control character is used to select non-printable ASCII
characters. The caret ‘‘^” must be followed by one character which together
form the control sequence. Table 3-4 defines all of the available control
sequences.