A short number that allows fast dialing of frequently used numbers. You can place a call by pressing a reduced number of keys without having to look up his/her phone number.
Sometimes you may just need to call someone quickly without having to look up his/her phone number. You can by simply define a shortcut number. For example, we set 1 as the speed dial code for number 5503301. To dial this number, we dial *991, where *99 is to access the speed-dial system’s feature and 1 is the speed-dial code we entered.
DOD (Direct Outward Dialing)