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PABX (Private Automated Branch Exchange) is a switch station for telephone systems. It consists mainly of several branches of telephone systems and it switches connections to and from them, thereby linking phone lines. Companies use a PBX for connecting all their internal phones to an external line. This way, they can lease only one line and have many people using it, with each one having a phone at the desk with different number. The number is not in the same format as a phone number though, as it depends on the internal numbering. Inside a PABX, you only need to dial three-digit or four-digit numbers to make a call to another phone in the network. We often refer to this number as an extension. ZM international is able to supply & install the PABX-Intercom & Fax machine as per your requirements
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