Huawei EchoLife ET323, Руководство пользователя

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EchoLife ET523 IP Phone User Manual 1 Installation
4
ET523 Extension Board
The ET523 supports two extension boards (EXTs), which provides up to 112 additional
programmable extensions. Each extension board has 56 multifunctional keys, dual
color LEDs (red/green) and supports busy lamp field (BLF) and bridged line
appearance (BLA) for specific platforms. Connect the first EXT to the phone with the
PS2 cable supplied with extension board package. The first EXT draws power directly
from the phone. Connect the second EXT to the phone with the PS2 cable. The ET523
will automatically reboot and power up the EXTs. Huawei recommends you to use an
extra power supply for the second EXT.
Starting the Phone
The ET523 will boot up first.
The status light in the upper right corner of the EXT blinks in red.
All of the LED indicators flash three times.
The status light at the upper right corner of the EXT is steady on in green.
Table 1-3 Connecting the ET523 with the EXT
ET523 and EXT EXT
Connecting the ET523 with the EXT Connection of two EXTs