We have 1st floor: 1-XX (100-199)
10th flo0r: 10-XX (1000-1099)
1st and 2nd Dial Digits: "1x" have Dial Digit Length is "3", type "Extension".
1st and 2nd Dial Digits: "10" have Dial Digit Length is "4", type "Extension".
So we can make a call form 1000 to 100, but can't call from 100 to 1000 (Dial "1", "0", "0" hear busy tone).
What is solution for this case?
10th flo0r: 10-XX (1000-1099)
1st and 2nd Dial Digits: "1x" have Dial Digit Length is "3", type "Extension".
1st and 2nd Dial Digits: "10" have Dial Digit Length is "4", type "Extension".
So we can make a call form 1000 to 100, but can't call from 100 to 1000 (Dial "1", "0", "0" hear busy tone).
What is solution for this case?