Wide-area client-server applications are a critical part of almost every large enterprise. However, access to widely-used and critical infrastructure across WAN (like file servers, mail servers and networked storage), is handicapped by very poor response time when compared to performance across Local Area Networks (LAN).

	Alternate connectivity: The WAN interfaces are typically connected using leased lines with interface such as T1/E1. There is a high probability that the T1/E1 links might go down thereby resulting in the loss of WAN connectivity. Hence, there was a need to have alternate WAN connectivity till the T1/E1 links are restored
	Higher speed connectivity: The serial dialup connections are typically slow. These types of connections cannot be used in a small office environment to connect computers to Internet or access remote sites. In addition, the connection set-up time is high for serial dialup connections. There was a need for higher speed connectivity for these applications

Our team worked closely with Tasman to jointly develop the solution. We were responsible for developing the call control application using third party stacks while the Tasman team was involved in building the ISDN hardware.

	Development of a call control (CC) application (user side) for the backup reference interface (BRI) to establish, maintain and clear ISDN calls. This application enabled supporting multiple calls and multiple variants of switches (like AT&T, Nortel DMS, French VN3 etc.)
	Porting of the 3rd party ISDN protocol stacks (Trillium Stacks Q.931 and Q.921) to Tasman's (proprietary) MIPS processor based, target environment
	Development of a Command Line Interface (CLI) to add and modify ISDN specific parameters