Usa "pbx" in una frase

1. I sold the PBX switch, the

2. When a large organization installs its own private branch exchange (PBX) to handle its telephone traffic, the switchboard is typically connected to one or more T-l lines, which are split into individual channels with enough bandwidth to handle a single voice-grade connection (56 to 64 Kbps)

3. Each of these channels becomes a standard voice “telephone line,” which is allocated by the PBX to users’ telephones as needed