Traditional PBX
Traditional PBX (Private Branch Exchange) is a hardware-based telephony system used by organizations to manage internal and external phone calls. It connects internal telephones within a business and links them to the public switched telephone network (PSTN) via trunk lines. These systems typically require on-premises installation, dedicated hardware like switches and phone sets, and specialized maintenance.
Developers should learn about Traditional PBX when working on legacy telecommunication systems, integrating with enterprise infrastructure, or understanding the evolution to modern VoIP solutions. It's relevant for roles involving system administration, telecom engineering, or migration projects where knowledge of hardware-based call routing, analog/digital signaling, and telephony protocols is essential.