1. 
   PBX
   Private Branch Exchange, details ...
   Found op http://www.cryer.co.uk/glossary/p/index.htm
   
   
2. 
   PBX
   Private Branch Exchange
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
3. 
   PBX
   Private Branch Exchange. See PABX.
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
4. 
   PBX
   Private Branch Exchange. A private telephone switch used in office or industrial environments. The computer running Oak Telecom`s Advance connects to a PBX.
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
5. 
   PBX
   Private Branch Exchange (i.e. telephone system) see PABX.
   Found op http://www.encyclo.co.uk/local/20632
   
   
6. 
   PBX
   Private Branch Exchange
   Found op http://www.met.police.uk/foi/glossary.htm
   
   
7. 
   PBX
   Private Branch Exchange
   Found op http://foldoc.org/PBX
   
   
8. 
   pbx
   1) Abbreviation for private branch exchange
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/pbx/1
   
   

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