Assuming Localphone is on SP3, just add this rule:
{(011xx.):sp3}
Notice that 011xx. is enclosed in parentheses. With the parentheses the argument becomes a digit map and the x's will check for digits. Without, it will check for a literal x.
There is a varying amount of delay when the phone digit map processes the dialed number. When a dialed number matches a rule the ends with "x.", there will be a 10 second delay. The easiest way to correct this is to change the phone port long timer.
DigitMapLongTimer: 3