Manufacturer Discontinued. There is no replacement for this part number.
- Plug-in unit for the MX3 Chassis (P/N 1189001L1) that provides two application modes, Copper mode and DS3 mode.
- Copper mode - provides twelve DS1 ports that can be bonded for transporting the traffic of up to four client Ethernet ports.
- DS3 mode - sixteen of the DS3 tributaries can be bonded for transporting the traffic of up to four client Ethernet ports.
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