nortel ip phone,,and avaya system

IP Office is a highly modular IP telephone system designed to meet the needs of home offices, standalone businesses, and networked branch and head offices for small and medium enterprises. The award-winning IP Office gives growing companies a complete solution for telephony, messaging, networking, conferencing, customer management, and unified communications.
IP Office is a versatile communications solution that combines the reliability and ease of a traditional telephony system with the applications and advantages of an IP telephony solution. This converged communications solution can help businesses reduce costs, increase productivity, and improve customer service.
At Avaya, our guiding principle is that customers should be supported in migrating to IP telephony at their own pace, following their own path. Our clients can use a mix of digital, analog, and IP technology and still take advantage of all the applications that convergence provides.