User Guide for the SIP-T54S Media IP Phone108If this is the case, the LCD screen will resemble the following figure:Incoming calls to this account will be distributed evenly among the available line keys. Outgoingcalls will be distributed similarly.Your phone can be configured to have a combination of accounts with a single line key andaccounts with multiple line keys.Dial PlanDial plan is a string of characters that governs the way your SIP-T54S media IP phone processesthe inputs received from your phone keypad.The SIP-T54S media IP phone supports the following dial plan features: Replace Rule Dial Now Area Code Block OutThe basic expression syntax you need to know:.The dot "." can be used as a placeholder or multiple placeholders for anycharacter. Example:"12." would match "123", "1234", "12345", "12abc", etc.x An "x" can be used as a placeholder for any character. Example:"12x" would match "121", "122", "123", "12a", etc.- Numeric ranges are allowed within the brackets: Digit “-” Digit. Example:“[5-7]” would match the number”5”, ”6”or ”7”.[]The square brackets "[]" can be used as a placeholder for a single characterwhich matches any of a set of characters. Example:"91[5-7]1234" would match "9151234", "9161234", "9171234".()The parentheses "( )" can be used to group together patterns, for instance, tologically combine two or more patterns. Example:"([1-9])([2-7])3" would match "923", "153", "773", etc.