... -12c/STM-4c ATM E3/CT3CE1/CT1 E1/T1IPv4Supports the static routing protocol and IPv4 dynamic routing protocols such as RIP ... A/B/C.Supports Asynchronous Transfer Mode (ATM) E1, Inverse Multiplexing over ATM (IMA), and Time-Division Multiplexing (TDM) PWE3.Supports MPLS ... Path (LSP), PW, OSPF, BGP, VRRP, PIM, and RRPP.Supports RRPP.Supports MPLS OAM and Ethernet OAM, Y.1731.Supports backup of service ...