The easiest way to deploy VoIP is to replace the PBX units with a VoIP gateway or relay. This is a unit that ... This feature is called power over Ethernet (PoE), and PoE phone sets do not have any power supply unit. Instead of using IP phonesanbsp;...
|Title||:||Administering Data Centers|
|Publisher||:||John Wiley & Sons - 2005-11-11|