XL versus Standard Differences:
Trunks from 8,000 to 12,000
CLAN Boards from 64 to 106
EC500 Enhanced CLID Support from 54,000 to 108,000 off-PBX station-mappings
Tone Detectors: from 1,200 to 8,000
Announcements: from 3,000 to 9,000
VAL boards: from 10 to 128
Attendants & attendant groups...