Supported Platforms
TDM Pseudowires Overview
A TDM pseudowire acts as Layer 2 circuit or service for T1 and E1 circuit signals across an MPLS packet-switched network. On ACX Series routers, you configure a TDM pseudowire with Structure-Agnostic Time Division Multiplexing (TDM) over Packet (SAToP) on the ACX Series built-in channelized T1 and E1 interfaces. When you configure a TDM pseudowire, the network between the customer edge (CE) routers appears transparent to the CE routers, making it seem that the CE routers are directly connected. With the SAToP configuration on the provider edge (PE) router’s T1 and E1 interfaces, the interworking function (IWF) forms a payload (frame) that contains the CE router’s T1 and E1 Layer 1 data and control word. This data is transported to the remote PE over the pseudowire. The remote PE removes all the Layer 2 and MPLS headers added in the network cloud and forwards the control word and the Layer 1 data to the remote IWF, which in turn forwards the data to the remote CE router.
