E1 G703 - X21 Interface Converter

This application shows a DC1000 connecting an X21 router card to an unframed E1 G703 2Mbps leased line, such as a BT Megastream-2 service. X21 serial ports are often the most cost effective WAN port available on routers. Most Telecom carriers provision E1 2Mbps services with G703 connectivity. Care must be taken to ensure that the remote equipment is configured in a compatible manner (i.e. unframed).

This application shows a pair of DC1000 units connecting a pair of X21 routers via an unframed E1 G703 2Mbps leased line, such as a BT Megastream-2 service. X21 serial ports are often the most cost effective WAN port available on routers. Most Telecom carriers provision E1 2Mbps services with G703 connectivity.

This application shows a DC1000 connecting an E1 G703 router card to an X21 2Mbps leased line, such as a BT Megastream-2 service. Care must be taken to ensure that the remote equipment is configured in a compatible manner (i.e. either X21 or E1 G703 unframed). This application requires an X21 DCE to X21 DCE crossover cable.

This application shows a pair of DC1000 units connecting a pair of E1 G703 routers via an X21 2Mbps leased line, such as a BT Megastream-2 service. This application requires the use of X21 DCE to X21 DCE crossover cables.

This applications show a DC1000 being used to connect a PBX PRI port to a 2Mbps X21 leased line, for when either an existing X21 leased line is available for re-use or alternatively when X21 connectivity has been provided rather than G703 (e.g. for economic reasons). This application requires an X21 DCE to X21 DCE crossover cable.

This applications shows how a pair of PBX systems can be connected together via a 2Mbps leased line using a pair of DC1000 units. This would occur either when an existing X21 leased line is available for re-use, or alternatively when an X21 connectivity has been provided rather than G703 (e.g. for economic reasons). This application requires the use of X21 DCE to X21 DCE crossover cables.

This application shows a DC1000 connecting an E1 G703 router card to an EIA530 satellite modem. The DC1000 supports a number of different clocking modes, and so it is possible to source the clocking for this network from the satellite modems, from one of the terrestrial circuits or from a DC1000 or router. This application requires a satellite link operating at 2Mbps and an X21 DCE to EIA530 DCE crossover cable.

Product variants with 12V to 24V DC operation are also available on request.