288 / Programming toolsModular ICS 6.0 Installer Guide P0992638 03Entering numbersNumbers are entered from the Norstar telephone dialpad. Thebackspace display button may be used to edit the number.A line number must always be entered as a three-digit number.Line numbers from 10 to 99 must be entered with a leadingzero (line 020, for example). Similarly, line numbers less than10 must be entered with two leading zeros (line 002, forexample).Internal telephone numbers, also referred to as directorynumbers (DNs), can be from three to seven digits long. Thedefault DN length is three. The DN length can be changed inprogramming.Viewing long telephone numbersExternal telephone numbers can be up to 24 digits, but thetelephone display is only 16 character spaces long. To see apreviously-programmed number that is longer than 16 digits,do the following:Begin, for example, with 123456789012345…. The displayshows only the first 15 digits. The three dots (…) at the end ofthe display indicate that more digits remain to the externalnumber.1. To see the remaining digits, press VIEW‚.2. To see the first 15 digits again, press ·VIEW.
