Larry is tasked with implementing a VoIP system in the office. He presents his research to his boss, who wants to use the current traditional hard phones to save money. What BEST explains why this is not possible?

answer

Hard phones don't conform to IEEE $805\mathrm{.}3.$

Regular hard phones only work with SNMP$,$ and VoIP hard phones use UDP and TCP$.$

A traditional hard phone does not have the internal computing parts to accept VoIP transmissions.

Traditional hard phones don't provide conferencing, but VoIP hard lines do$.$