Usually, the cable plant of most telecom service providers is not designed to deliver E1 services to connect the fully digital corporate LAN and ISP networks, which in such cases can only be accessed by dial-up, 2 wire analog lines - the only available links for connecting the Exchange (Central Office) to the corporate / ISP networks.

Valiant's E1 multiplexer application, the VCL-WAN ACCESS, E1 Network Access Multiplexer is especially useful in countries where the cable plant is not equipped to deliver E1 or T1 services to the customers, who are using the next generation network access equipment which can only connect to an E1 or a T1 interface.

The VCL WAN Access multiplexer may be used for terminating voice and data traffic with PSTN lines that shall support, or, shall not support "battery reversal / polarity reversal" (answer supervision).

Usually, inter-connectivity problems arise if only 2 wire, analog lines are being provided by the telephone company to the subscriber premises to connect the next generation, digital corporate, LAN and ISP networks which can only connect, directly, to an E1 or a T1 interface. Most of the next generation network access servers, available today, can only connect to the PSTN through digital E1 or T1 interfaces.

Installing multiple VCL-WAN ACCESS systems can provide multiple E1 Interfaces. The VCL-WAN ACCESS supports V.34, download data transmission rates of 33.6Kbps and upload transmission rate of 31.2kbps.

The VCL-WAN ACCESS supports V.34, download data transmission rates of 33.6Kbps and upload transmission rate of 31.2kbps. The VCL WAN Access supports Fax over IP.