The Cisco four-port channelized E1 Frame Relay port adapter is designed for use with the LS1010 and Catalyst 8500 MSR editions. This 4xChannelized E1 Port Adapter Module (PAM) provides four E1 interfaces for full-duplex communications at up to 2.048 Mbps. Each E1 line supports up to 31 channels (logical ports) for a total of 124 channelized Frame Relay ports on a single, half-slot port adapter module. Each E1 line consists of an RJ48C along with LED indicators for line status.Fractional E1 ports as well as unchannelized E1 are supported on this PAM in order to provide a high degree of bandwidth flexibility to meet the growing capacity requirements of service carriers. Standards-based adaptation technology, a high degree of configuration flexibility, and advanced quality of service (QoS) and traffic management features in a moderately dense port configuration, combine to make the 4xChannelized E1 Frame Relay PAM a very cost-effective solution.