While Teams includes several collaboration essentials, such as team messaging and video conferencing, telephony isn’t one of them. Teams requires a separate solution to enable external public switched telephone network (PSTN) calls outside of the organization. This presents some critical issues since calling is still one of the most popular communication tools used globally—its omission as a standard feature in Teams leaves your business without a key asset. 

Many businesses need telephony integrated natively into their Teams environments. Telephony integration natively allows users to access private branch exchange (PBX) features, such as call control and management, without having to move into other applications or systems—this reduces downtime and application overload and simplifies training and management