The E1/T1 module supports both SONET and SDH standards and can be configured to provide either local E1 or T1 interfaces. Equipped with 8 local interface ports, the E1/T1 module encapsulates each pair of local transmit interfaces into Ethernet frames and transfers them to the MD8000 Switch Controller (SW-CNT) modules. In the reverse direction, incoming Ethernet streams are transferred from the SW-CNT and sent to the output connectors as E1/T1 signals. To add resiliency to the signal transport, both Forward Error Correction (FEC) and hitless switching are optional for these streams.
The E1/T1 module is a double-width module that occupies two adjacent slots in a MD8000 chassis. The module provides uni-directional control of 4/8 E1/T1 services over the WAN. Two E1/T1 services are encapsulated into a single Ethernet stream in order to minimize delay and maximize bandwidth efficiency. The paired E1/T1 signals must be connected to the same destination.
The front panel of the E1/T1 module features a comprehensive set of LEDs for monitoring the status and health of incoming and outgoing audio streams. Using SNMP, the module is also fully manageable by Media Links’ NMS systems.