Olejniczak
ISBN:9780470098547
Asterisk is an open source software solution that allows businesses and organizations to create their own Private Branch Exchange (PBX) phone system...
Format:Paperback Pages:334
USD $32.29
Olejniczak
ISBN:9780471770855
- Worldwide telecom spending was over $4 trillion in 2004, and virtually all 12 million businesses in the U.S. buy phone and other...
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Format:Paperback Pages:358USD $27.77
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