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Question

Adding a new PoE Switch to an existing network

Jul 30, 2016 8:32PM PDT

This is what I need to do. I ran one Cat 6 line to an office room. This room needs 5 phone lines. I purchased a PoE switch with 8 connections. There is an existing network. When I cabled the new PoE switch to the network, and plugged in the Cat 6 line to one of the PoE lines the phones did not work. When I place the PoE switch in the office room, and added lines to each phone, and ran a ethernet cable in each PoE jack it worked. What am I doing wrong? How to I get the PoE switch to work in the server room, and not run so much cable?

Discussion is locked

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Answer
The second setup that worked sounds correct.
Jul 30, 2016 8:39PM PDT

The setup that doesn't work looks incorrect. PoE is mostly about wiring rules. I can't fit the class into this small space but in short, on PoE each device is a home run to the PoE switch.

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Adding a new PoE Switch to an existing network
Jul 30, 2016 8:54PM PDT

Here is what I did at first, Comcast Business Class Modem port 3 to PoE switch, switch panel to PoE switch port 1. I ran a network switch (without PoE) in the office area, and plug into VOIP phone, no power.

Unplug everything. Brought PoE switch to office area, ran 5 Ethernet cables to each phone, plug into PoE switch ports 1-5. That worked.

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You explained why it doesn't work.
Jul 31, 2016 8:55AM PDT

"I ran a network switch (without PoE) in the office area, and plug into VOIP phone, no power."

No PoE, no Power.

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Add a new PoE switch to an existing network
Nov 14, 2016 10:04PM PST

Using a network switch(without PoE) in the office area, and plug into VoIP phone, no power; this is because network switch(without PoE) just delivery data and doesn't supply power, if you want the network switch(without PoE) work with the VoIP phone, you should connect a PoE injector to supply power; And PoE switch can supply power and delivery data at the same time!