4.2 System ProgrammingFlash Time418System Programming 4-75Description Assigns the length of the flash time. If the system is installedbehind a host PBX, External Feature Access (EFA) is necessary toobtain its services. To enable this feature, select the requiredhooking signal sending time for an outside (CO) line.Selection • Outside (CO) line number: 1 – 6, ( = all outside (CO) lines)• Time (milliseconds): 80 ms / 100 ms / 160 ms / 300 ms / 600 ms /900 ms / 1200 msDefault All outside (CO) lines – 600 msProgramming 1. Enter 418.Display: Flash Time Set2. Press NEXT.Display: CO NO? →3. Enter an outside (CO) line number.Pressing NEXT also can enter outside (CO) line number 1.Display example: CO 1: 600ms4. Keep pressing SELECT until the desired time is displayed.5. Press STORE.6. To program another outside (CO) line, press NEXT orPREV, or SELECT and enter the desired outside (CO) linenumber.7. Repeat steps 4 through 6.8. Press END.Conditions • The required flash time is determined by the central office or host PBXlines.• To assign all outside (CO) lines to the same selection, press the keyin step 3. In this case, the display will show: CO :Mixed.Feature References Section 3, FeaturesExternal Feature AccessFlash