3 Features FFeatures 3-79Flexible NumberingDescription The numbers used for the access codes of system features and thenumbers used for extension numbers are not fixed. They can be setas required, provided there are no conflicts. Feature numbers canbe from one to three digits, utilizing numbers “0 through 9” as wellas “ ” and “#”. Extension numbers can be two to four digits inlength. Any number can be set as the leading first or second digit.If one digit is assigned as the leading digit, some extensions have 2-digit numbers and some have 3-digit numbers. If two digits areassigned as the leading digits, some have 3-digit numbers and somehave 4-digit numbers.Flexible Feature Numbers NUMBER FEATURE DEFAULT01 1st hundred extension block 102 2nd hundred extension block 203 – 16 3rd through 16th hundred extension block None17 Operator call 018 Automatic line access / ARS 919 Outside line access 820 System speed dialing21 Station speed dialing 322 Station speed dialing programming 3023 Doorphone call 3124 Paging – external 3225 Paging – external answer / TAFAS answer 4226 Paging – group 3327 Paging – group answer 4328 Call pickup, outside line 429 Call pickup, group 4030 Call pickup, directed 4131 Call hold 5032 Call hold retrieve – intercom 5133 Call hold retrieve – outside line 5334 Last number redial #35 Call park / call park retrieve 5236 Account code entry 4937 Door opener 5538 External feature access 639 Station feature clear 79040 Message waiting 7041 Outgoing message 36