The Avaya MERLIN MAGIX® Integrated System is a private branch exchange (PBX) with a built-in ability to emulate a traditional key system. Using a single platform to deliver key communications capabilities from basic voice to Internet access, makes it highly cost-effective and easy to install, service, maintain, and grow. This flexible and scalable system is designed to meet the evolving communications needs of small- and mid-sized businesses. It is ideal for small companies looking for the latest communications features, as well as for larger companies who can install this system in their branch offices. The MERLIN MAGIX networking capabilities enable multiple locations to communicate across the public switched telephone network (PSTN) or across an Internet Protocol (IP) network.