Specifications

2-18 Cisco MGX 8220 Reference, Release 4.1
BNM-T3/E3
In this format, the virtual circuit is defined by:
• Slot specific position of the VPI
• 4-bit slot number position of the VPI
• 10-bit logical channel number (LCN) assigned as the VCI
The CC/FFCI/Supervisory field is used for ForeSight bits and a Supervisory bit.
Figure2-14 MGX 8220 ATM Trunk Cell Format
Figure2-15 CC, FFCI, EFCI, Supv, PTI, and CLP Fields