Installation Manual
H3C VG 21-08 Voice Gateway
Chapter 2 Installation Preparations
2-1
Chapter 2 Installation Preparations
2.1 Site Requirements
The VG 21-08 is intended for indoor use. To ensure normal
operation and long service life for your device, install it in an
environment that meets the requirements described in the following
subsections.
2.1.1 Temperature/Humidity
You must keep the temperature and humidity in the equipment
room within a certain range. Long-term high humidity will lead to bad
insulation or even electricity leakage, mechanical property change,
and corrosion. However, too low relative humidity is likely to leave
captive screws loose due to contraction of insulation washers and
static electricity that threatens the CMOS circuit on the device. High
temperature accelerates aging of insulation materials and lowers
reliability and service life of your VG 21-08.
The following table lists temperature and humidity requirements
for the VG 21-08.
Table 2-1
Temperature/Humidity requirements in the equipment
room
Temperature
Relative humidity
0
°
C to 40
°
C (32
°
F to 104
°
F)
10% to 90%
