The OBi analyzes each digit as they are received and will process the received digits immediately or wait for more digits depending on the rules in the DigitMap.
There are 2 timers.
The short timer is 2 seconds.
The long timer is 10 seconds.
If a dialed number only matches a rule ending with "x.", there will be a 10 second delay.
This is considered an Indefinite Match because "x." will match any number of digits and the long timer is used. The OBi doesn't know if you will enter additional digits, so it waits.
If the dialed number matches a rule without "x.", it will result in an Exact Match. If the dialed number can potentially match another rule if more digits are entered, the OBi will use the short timer of 2 seconds. If the dialed number cannot potentially match another rule if more digits are entered the OBi will process the call immediately and not wait for additional digits.
An S suffix on a DigitMap rule followed by a number will override the wait period.
The OBi2xx has the option to globally change the default short and long timers.
Assuming you dial *97, 7 digits, 10 digits and 12 digits with 44 country code.
(*97|xxxxxxx|xxxxxxxxxx|44xxxxxxxxxx)
Wait times for dialing the following:
*97 - no wait
1234567 - 2 seconds
4434567890 - 2 seconds
1234567890 - no wait
441234567890 - no wait