Compare Cisco (PA-8T-X21=) Expansion Module to Cisco (PA-MCX-8TE1) (PA-MCX-8TE1=) Expansion Module

The PA-8T-X21 provides up to eight synchronous serial interfaces for the Cisco 7000 family routers and the Cisco uBR7200 series routers. PA-8T-X21 network interfaces provide a direct connection between the high-speed bus in the router and external networks. Each PA-8T-X21 interface provides full-duplex (FDX) operation at T1 (1.544 Mbps) and E1 (2.048 Mbps) speeds. The X.21 interface is commonly used in the United Kingdom to connect to public data networks.??All eight PA-8T-X21 interfaces connect to external networks through a single port that has a 200-pin, D-shell receptacle. You must use an X.21 compact serial cable to connect PA-8T-X21 interfaces to an external data service unit (DSU) or channel service unit (CSU). The compact serial cable attached to the single receptacle determines the mode (DCE or DTE) for all eight interfaces. Less

The MIX-enabled T1/E1 port adapters provide the ability to integrate voice and data on the same T1/E1 interface without the need for an external time-division multiplexing (TDM) device. With the "drop and insert" capability, DS0-level grooming is supported, thus providing cost-effective WAN access. Ports can be configured as voice, data, or both, depending on the application requirements. Powerful management capabilities are provided with the Cisco Voice Manager 2.0 Web-based user interface for provisioning, configuration, and monitoring functions.??The MIX-enabled T1/E1 port adapter enhances the multi-service solutions enabled by the enhanced digital voice adapters available on the Cisco 7200 VXR series of routers. By using the TDM capabilities of the Cisco 7200 VXR, the MIX-enabled T1/E1 port adapter can maximize the use of digital-signal-processor (DSP) resources on the enhanced digital voice adapters. The MIX-enabled T1/E1 port adapter enables the use of the DSP resource pool o... Less