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Wednesday, December 19, 2007

Patch Panel

Patch Panel Overview

Typically, LAN-based IP telephones use external power converters located at or near the desktop. The inline-power patch panel eliminates the need for external power sources; it is a standalone chassis that can be co-located with the Catalyst switch to provide -48 VDC power directly to the telephone through existing Catalyst family 10/100BaseTX switching modules. When used with an uninterruptible power supply (UPS), the inline-power patch panel can provide power to the telephone even in a power failure.

The inline-power patch panel has 48 RJ-45 input ports and 48 RJ-45 output ports (see Figure 1). There are two RJ-45 connectors per port for a total of 48 ports. Each input connector is internally connected to a corresponding output connector (input connector 1 is connected to output connector 1, and so on).

The RJ-45 ports serve as the physical network interfaces to the inline-power patch panel. The lower bank of ports provide 10/100-Mbps connection to the switch through RJ-45 connector pins 1, 2, 3, and 6. The top bank of ports provide -48 VDC power to the IP telephones through RJ-45 connector pins 4, 5, 7, and 8, in addition to transparently passing 10/100 Mbps data traffic on pins 1, 2, 3, and 6.

Front Panel Description

This section describes the front-panel features of the inline-power patch panel:

48 RJ-45 client ports for connecting to IP telephones

48 RJ-45 switch ports for connecting to 10/100BaseTX switch ports

Unit status LED (see Table 1)

Port status LED (see Table 2)

AC-input connector

ESD receptacle

Figure 1 Inline Power Patch Panel Front Panel

Table 1 Unit Status LED Description

Color
Description

Green

Power successfully applied to all ports.

Red

Power problem on one or more ports.

Off

No AC-input power to inline-power patch panel.


Table 2 Port Status LED Description

Color
Description

Green

Power successfully applied to port.

Flashing Green and Amber

Power problem on the port.

Amber

Power not applied to the port.

Off

No AC-input power to inline-power patch panel.


FRONT VIEW ENLARGED


BACK VIEW ENLARGED



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