Multitech MTA128ST Owner's Manual Page 59

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59-IWay Hopper
AT Commands/S-Registers
S-Register: S52
Function: Auto-Protocol Detection
Unit: Decimal ASCII code
Range: 0 or 1
Default: 1
Description: S52 sets whether the mechanism for identifying V.110, V.120,
X.75, MLPPP, or SoftBond operation is enabled or disabled. This is applicable for
an ISDN data call; and once determined by the MTA128ST the protocol used by
means of the information conveyed by the SETUP message, then the indicated
protocol is activated. The default setting is 1, which enables the Auto-Protocol
Detection function.
S-Register: S53
Function: Maximum Frame Size (X.75)
Unit: Decimal ASCII code
Range: 0-2048
Default: 2048
Description: S53 sets the maximum size of data frames in X.75 mode. This
register can be configured to contain as many as 2048 characters per frame, and is
the MTA128STs default value
4.3 Result Codes
When the MTA128ST receives an AT command from the computer or terminal, it
attempts to execute the command, then sends a status message to the computer or
terminal that reports the result of the command. The MTA128ST provides you
with several of these response messages, or result codes, which can be displayed
on your monitor or intercepted and used by your communications software. Using
the V command, you can select whether the result codes are terse (numbers) or
verbose (words).
The MTA128STs result codes are listed in the following table. Note that the
speed of an ISDN channel is always either 56K bps or 64K bps. CONNECT mes-
sages indicate the speed of the connection between the MTA128ST and your com-
puter or terminal.
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