ISU AT Command Reference
ISU AT Command Reference
ISU AT Command Reference
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<strong>ISU</strong> <strong>AT</strong> <strong>Command</strong> <strong>Reference</strong><strong>Command</strong> Overview3.6 <strong>Command</strong> ResponsesA result code is sent to the DTE in response to the execution of a command. It may also occur unsolicitedfrom other conditions such as an incoming call (e.g., RING). Responses returned as a result of a query arecalled information responses.Result codes can be represented by text if the <strong>ISU</strong> is in verbose mode or with numbers if in numeric mode.The command <strong>AT</strong>Vn informs the <strong>ISU</strong> whether to respond in verbose or numeric mode. Further note thatresponses can be suppressed with by setting the command <strong>AT</strong>Qn to <strong>AT</strong>Q1. Table 3-1 below shows thedifference in format between these modes.Table 3-1: Result Code Response FormatNumeric Mode<strong>AT</strong>Q0 <strong>AT</strong>V0Verbose Mode<strong>AT</strong>Q0 <strong>AT</strong>V1Result codes Information Responses <strong>Command</strong> entries with invalid syntax typically respond with ERROR. <strong>Command</strong> entries of valid syntaxwith an out-of-range parameter can respond in one of three following manners:• Disallow out-of-range entry and respond with ERROR• Disallow out-of-range entry and respond with OK• Disallow out-of-range entry, accept the closest in-range value, and respond with OKVersion 2.6March 30, 2006 9
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