Building Automation Level II Practice Exam

VoIP becomes popular largely because it can lower costs and add flexibility by using data networks to carry voice. It eliminates many of the dedicated, per-line costs of the traditional telephone system, reduces long-distance charges, and lets features (voicemail, call routing, conferencing) be added in software rather than with new hardware. While there can be upfront setup costs and network requirements to ensure reliability and quality of service, the overall economic model is typically cheaper and more scalable than traditional PSTN, which is why the statement is not correct.