One-Digit Codes
If One Digit Codes is set to true the selector codes are limited to one digit—0 to 9—plus the quick keys—pound (#) and asterisk (*). These codes are easier to remember and dial. However, they also have the following limitations:
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Only ten codes are available
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Control codes are not recognized
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The pound and asterisk keys can only be assigned a single digit code
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The system no longer recognizes the 0<selector code> form, which deactivates any established individual path. This means if multiple codes, has been enabled a previously established path cannot be deactivated.