PSTN is the Public Switched Telephone Network, the system
based on circuit-switched technology for real time voice
transmissions.
VoIP
VoIP | What is VoIP and how can it benefit businesses?
Key Takeaway: VoIP (Voice over Internet Protocol) is a technology that allows you to make and receive voice calls over the internet rather than a traditional analogue phone line. It converts voice signals into digital data packets, transmits them via an internet connection, and reassembles them at the destination. It consolidates voice and data […]
PABX
The term PABX refers to a Private Automated Branch Exchange.
It is a business telephone network where calls are digitally routed within
the organization.
VoIP Equipment | IP Telephony Information
With VoIP telephones, adapters and equipment, low-cost phone calls are transmitted digitally over computer networks.