Rear View

The ports located on the rear of the phone are described in the table.

Rear View

Rear View Description

#

Label

Description

1

73

Handset jack, i.e., port RJ-9, to connect the handset.

2

LAN

RJ-45 port to connect to the Ethernet LAN cable for the LAN connection (uplink - 10/100/1000 Mbps). If you're using Power over Ethernet (PoE), power to the phone is supplied from the Ethernet cable (draws power from either a spare line or a signal line).

3

PC

RJ-45 port to connect the phone to a PC (10/100/1000 Mbps downlink).

4

DC

12V DC power jack that connects to the AC power adapter.

5

USB port for connecting an external headset.

Differences exist between C455HD non-DBW and C455HD DBW.
C455HD DBW features an expansion module
C455HD non DBW does not feature an expansion module
The preceding figure shows C455HD non DBW.