The Problem
In an existing Telephony network, a Legacy (or Traditional) PBX already exist in place. At some point, our customer faces the challenge to either:

	Deploy new services at remote locationn
	Support Mobile Users calling from IP-Phones, or SoftPhones from their Laptops
	Implement new services such as Voice-Mail to Web or IP-Based Conferencing.

The Solution:
StitelNet's LSB or Legacy to SIP Bridge.

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What is LSB?

	LSB is a bundled application derived from one of our Core applications called ESS (Enterprise Soft Switch).
	LSB is intended to provide Next-Generation Features to Telephony implementations where a Legacy PBX already exist in the network.
	LSB is a Powerful Software Driven application capable of enhancing the capabilities of any traditional Telephony network by adding the following features:
	SIP Registrar Server (To allow Local or Remote SIP VoIP Endpoints to become part of the Legacy Network)
	Analog or Digital Interfacing to the Legacy PBX
	NAT Traversal RTP Proxy (To allow remote NATed SIP devices to communicate with the rest of the network)
	MCU (VoIP based Built-In Multi-Conferencing Unit) to allow Legacy or SIP subscribers to access any of multiple virtual conferencing rooms
	Integrated Voice-Mail Server for IP based Voice Mail (Supporting also VM to Web and VM to E-Mail)