The main characteristics of the ATM backplane are as follows:Modular structureFull floating ATM media modulesSupport of two 6416SW modules for reliability and redundancy (in 17-slot models)Full coexistence with existing legacy LAN modules.ATM media modules can be hot-swapped into any open slot. Also, you can remove anATM module and re-insert it into another slot without disturbing the operation of otherATM modules and without causing a failure in ATM connections in the hub.You can install an ATM media module in any one of slots 1 to 8 in a 10-slot model, andof slots 1 to 8 and 12 to 17 in a 17-slot model. Slots 9, 10, and 11 (in 17-slot models)are reserved for 6416SW modules. After installing the module, you must configure it foroperation by entering a series of commands from the 6416SW local console or from aTELNET session. The commands are detailed in the3Com ONcore SwitchingHub/CELLplex 4000 Workgroup Switch, ATM Command Reference Guide 17-00866,SA33-0385 (hereafter referred to as theONcore Switching Hub/CELLplex 4000 ATMCommand Reference Guide).1-5