The FRM220A incorporates a 24+4 Gigabit Ethernet Switch. Twenty ports supply each slot of the 2U 20-slot chassis with an electrical gigabit Ethernet uplink with the remaining four electrical gigabit ports accessible via the rear of the chassis. The additional four ports are provided by SFP sockets. All eight gigabit ports (4+4) are usable without restrictions for uplink aggregate to the Ethernet Metropolitan Area Network (E-MAN). The FRM220A-GSW/SNMP card transmits Ethernet between the subscriber equipment (bridge/modem or network interface card) and the E-MAN. The card provides a user-networking interface with Ethernet packets. This card is capable of providing high bandwidth for assembling Ethernet traffic. The FRM220A-GSW/SNMP card is not only the system aggregate/trunk module, but also the system's control module, providing OAM Management functions.

The FRM220A-Eoe1 is a slide-in card E1 inverse multiplexer capable of bundling 1x E1 lines for cost-effective connection of 10/100BaseTX or 100Base-FX LANs over multiple E1 transports. The FRM220-E1/ET100 inverse multiplexer transmits up to a 1.984Mbps Ethernet bridge channel (GFP-F encapsulated) over E1 links. The FRM220-E1/ET100 bridges the gap between E1 and E3, allowing bridges to operate at faster rates. It also provides high speed access to SDH/SONET backbones where the only access services available are E1 lines.

The FRM220A is a 2U high 19" Rack, 20 slot modular media converter rack, designed with one Gigabit Ethernet switch uplink, for efficient scalability and easy deployment in access networks. Technologies Supported: ► E1 Inverse Multiplexer ► 10G, 2.7G 3R Transponder ► Gigabit Ethernet Converter ► Fast Ethernet Converter ► Fiber Multiplexer ► POTS Fiber Converter ► Fiber Repeater ► E1/T1 Fiber Modem ► V35/X21/RS530 Fiber Modem ► Serial RS485/422 Fiber Converter

The FRM220A-iMUX5 is a slide-in card E1 inverse multiplexer capable of bundling up to 5 E1 lines for cost-effective connection of 10/100BaseTX or 100Base-FX LANs over multiple E1 transports. The FRM220-5E1/ET100 inverse multiplexer transmits up to a 9.92Mbps Ethernet bridge channel (GFP-F encapsulated) over 5 E1 links. The FRM220-5E/ET100 bridges the gap between E1 and E3, allowing bridges to operate at faster rates. It also provides high speed access to SDH/SONET backbones where the only access services available are E1 lines.

The FRM220-iMUX8 is a slide-in card E1 inverse multiplexer capable of bundling up to 8 E1 lines for cost-effective connection of 10/100BaseTX or 100Base-FX LANs over multiple E1 transports. The FRM220-iMUX8 inverse multiplexer transmits up to a 15.87Mbps Ethernet bridge channel (GFP-F encapsulated) over 8 E1 links. The FRM220-iMUX8 bridges the gap between E1 and E3, allowing bridges to operate at faster rates. It also provides high speed access to SDH/SONET backbones where the only access services available are E1 lines.

The FRM220A-iMUX16 is a slide-in card E1 inverse multiplexer capable of bundling up to 16 E1 lines for cost-effective connection of 10/100BaseTX or 100Base-FX LANs over multiple E1 transports. The FRM220A-16E1/ET100 inverse multiplexer transmits up to a 31.74Mbps Ethernet bridge channel (GFP-F encapsulated) over 16 E1 links. The FRM220A-16E1/ET100 bridges the gap between E1 and E3, allowing bridges to operate at faster rates. It also provides high speed access to SDH/SONET backbones where the only access services available are E1 lines.