The large variety of interfaces supported by the FOM-40 facilitate the connection of distant routers to data services. The Ethernet/Fast Ethernet bridge modules enable the connection of remote LANs and VLANs. The FOM-40 extends these services and connections over fiber optic cables and performs the hand-off to the SDH/SONET or IP network.
The FOM-40 features V.54 diagnostics to perform local analog/digital and remote digital loopbacks. Loopback commands are controlled either manually by a front panel switch or via the DTE interface signals. The front panel switch generates an internal pseudo-random test pattern (511) according to the V.52 standard, for testing end-to-end connectivity.
The FOM-40 is available as a standalone unit or as a card for the ASM-MN-214 19" rack.