Deevyesh Tyagi
02-27-2006, 06:48 AM
As organizations migrate to high-speed, sophisticated network infrastructures to provide services such as voice over IP (VoIP), the fundamental issue of reliability of service remains a concern. Unlike plain old telephone service, where power for telephone service is delivered right over the wiring, VoIP presents its own reliability challenges for network engineers.
Final approval of the power-over-Ethernet (PoE) standard last year removed a significant barrier to widespread adoption of IP telephony. The standard. IEEE 882.3af, specifies how to supply electrical power to compliant devices over Ethernet LAN cabling. Armed with uninterruptible power supplies (UPS), IT staff can now deploy VoIP telephones without worrying about them not functioning during a power outage.
A single-standard Ethernet cable will new be able to provide both power and communication services to IP telephones, guaranteeing power to all connected devices and ensuring reliability of service. Among the advantages of PoE:
* Reduced cabling costs. Because one set of wires provides both power and data to IP telephones connected on the network, installing a local power source at the device is net necessary.
Final approval of the power-over-Ethernet (PoE) standard last year removed a significant barrier to widespread adoption of IP telephony. The standard. IEEE 882.3af, specifies how to supply electrical power to compliant devices over Ethernet LAN cabling. Armed with uninterruptible power supplies (UPS), IT staff can now deploy VoIP telephones without worrying about them not functioning during a power outage.
A single-standard Ethernet cable will new be able to provide both power and communication services to IP telephones, guaranteeing power to all connected devices and ensuring reliability of service. Among the advantages of PoE:
* Reduced cabling costs. Because one set of wires provides both power and data to IP telephones connected on the network, installing a local power source at the device is net necessary.