4-10 System Programming[009] 4.2 System Programming[009] Extension Number AssignmentSelects an extension numbering plan, Plan 1, Plan 2 or Plan 3, and assigns an extensionnumber to each extension.Plan 1: Available extension numbers are 200 through 299.Plan 2: Available extension numbers are 100 through 499.Plan 3: Available extension numbers are 10 through 49.Default Plan 1: extension ports 01 through 24 – extension numbers 201 through 224• If the selected extension numbering plan is the same as the previously stored one, 2 beepswill be heard.• If “Plan 2” or “Plan 3” is selected, the default extension numbers will changeautomatically as follows.Plan 2: extension ports 01 through 24 – extension numbers 201 through 224Plan 3: extension ports 01 through 24 – extension numbers 21 through 44• If “Plan 2” or “Plan 3” is selected, some feature numbers will also change. Refer to theattached leaflet for details.• A double entry of the extension number is invalid. If the programmed extension numberis the same as a previously stored one, 2 beeps will be heard when the STORE button ispressed. When extension number 203 has already been assigned to port number 03, toassign extension number 203 to the port number 05, change the extension number of portnumber 03 to another one. Then assign extension number 203 to port number 05.• If a Voice Processing System (VPS) is connected to the system, select “Plan 1” or “Plan2” in this program and “Enable” in [103] “DTMF Integration”, so that the DTMFintegration between VPS and the system can be enabled.• If a rotary telephone is used at any extension, select “Plan 1” in this program.• Feature ReferenceSection 3, FeaturesIntercom Calling!!+900 NEXTENDextension no.(01··· 24)NEXT PREVorextension port no.SELECTTo continueTo continueSTORESTORESELECT(Plan:1/2/3)NEXT