This chapter lists some important network parameters that affect voice quality. In addition to endpoints, there are several network parameters that can influence voice quality. IP Telephony quality can be engineered and administered to several different levels to accommodate different business needs and budgets. Avaya provides network requirement options that can help customers to choose the best-suited voice quality for their organization.

Before implementing IP Telephony, you must measure the latency, jitter, and packet loss to ensure that all values are within bounds.