Allied Telesis AT-CM70S 100Mbit/s network media converter

AT-CM70S - IEEE 802.2ah, 1 x 10/100TX, Auto MDI/MDI-X, 4 x T1/E1, Rate limiting Overview
The AT-CM70S T1/E1 media converter line card is designed to increase the capacity of an existing
point-to-point fiber network, by multiplexing up to four T1/E1 TDM channels and one Fast Ethernet
channel over a single fiber interface. By the use of a modular fiber SFP (mini-GBIC) uplink, installers
can easily deploy the AT-CM70S over a wide range of fiber optics, including multi-mode, single-mode
and bi-directional fiber at distances up to 40km.

Expanding the Bandwidth
Each AT-CM70S media converter card features four T1/E1 twisted pair interfaces, and one
10/100TX copper twisted pair interface. All five data paths are multiplexed onto a single SFPbased
fiber interface, for transportation up to 40km.A second AT-CM70S blade at the remote site de-multiplexes the single, and provides the five separate data streams. Deploying the AT-CM70S allows existing installed fiber cables, carrying only a single T1 or E1 channel, to be upgraded to carry more than four times the amount of traffic, without having to install any new fiber cable. All the T1/E1 channels are fully independent, allowing a service provider to expand the capabilitities of an existing fiber, whilst providing WAN services to different customers. Each T1 copper port has a maximum bit rate of 1.544Mbps, and a maximum line length of 6000ft over 100 Ohm balanced cable.
Each E1 copper port has a maximum bit rate of 2.048Mbps, and a maximum line length of 2.5km
over 120 Ohm balanced twisted pair cable. The 10/100TX Ethernet twisted pair port has an
RJ-45 connector and a maximum operating distance of 100 meters (328 feet).