Summary :
Aggregation · Services bundled into IOF trunks with appropriate destination OC-N Transport Network Present Mode of Operation ILEC/PTT CO ILEC/PTT CO (Hub) Metro Access DS1, DS3 WB/BB DCS DSX-3 Large Offices Only OC-N OC-N Fiber PatchPanel OC-3/12/48 OC-N, GE, SAN 3/3 3/1 OC-48/192 Metro IOF Core WB/BB DCS DS3/OC-N OC-N Fiber PatchPanel OC-N 1333_FrameBook.book Page 70 Tuesday, February 25, 2003 11:33 AM © 200 3 by CRC Press LLC