Private Branch Exchange (PBX)

A private branch exchange (PBX) is in short, a business telephone system, consisting of multiple lines. PBX’s differ from traditional telephone exchanges that serve the public in that a private branch exchange only serves a particular business or office – it is not a publicly shared phone system. Extensions refer to any end point on the public exchange branch – when you call into a business and are asked to enter an extension, they are using a PBX.

In addition to traditional PBX systems, there are hosted PBX system and mobile PBX system.

A Hosted PBX delivers the functionality of a traditional private branch exchange as an actual service, over a normal Public Switched Telephone Network (PSTN) – hosted options are provided by telephone companies using equipment that is a part of that companies exchange.

A Mobile PBX sets mobile phones and smartphones as extensions which allows them to utilize features offered by a traditional PBX.

Call Forwarding
Caller ID
Cellular Telecommunications and Internet Association (CTIA)
CNAM
Common Alerting Protocol (CAP)
Common Short Code Administration (CSCA)
Connected Call Length
Do Not Call (DNC)
DTMF
FreePBX
Interactive Voice Response (IVR)
Long Code
Multimedia Messaging Service (MMS)
Opt-In
Opt-Out
Phone RSVP System
Phone Script
Phone-In System
Plain Old Telephone Service (POTS)
Predictive Dialer
Private Branch Exchange (PBX)
Push Notification
Push-To-Repeat
Push-To-Talk
SaaS
Session Initiation Protocol (SIP)
Short Message Service (SMS)
Simple Mail Transfer Protocol (SMTP)
SMS Gateway
STIR/SHAKEN
Telephone Chain
Telephone Polling
Text Message Forwarding
Text Message Marketing
Text-To-Speech (TTS)
Vanity Phone Number
Voice Over Internet Protocol (VoIP)

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