Ubee EVW32C Subscriber User Manual page 52

Ubee Interactive
6.3.5.2 Estimating Wireless Cable Modem to Wireless Client Distances
The information in this section helps you to determine how far a wireless access point (the
EVW32C) can be placed from wireless client devices. Environmental variances include
the capabilities of wireless clients and the types of material through which the wireless
signal must pass. When the EVW32C and wireless clients reach the distance threshold
between each other, network performance degrades.
To determine wireless cable modem placement:
1. Connect a wireless client to the EVW32C. Refer to
on page 15
2. Place the wireless client at around one meter (three feet) away from the EVW32C.
3. Obtain the RSSI value for the connected client. Refer to
Option on page
4. Use the following table to determine what materials the wireless signal must travel
through to reach the desired wireless coverage distance.
Free Space
Interior Drywall
Cubicle Wall
Wood Door (Hollow/Solid)
Brick, Concrete Wall (Note 1)
Glass Window (not tinted)
Double Pane Coated Glass
Bullet Proof Glass
Steel / Fire Exit Door
Human Body
Trees (Note 2)
Note 1: Different types of concrete materials are used in different parts of the world and the thickness
and coating differ depending on whether it is used in floors, interior walls, or exterior walls.
Note 2: The attenuation caused by trees varies significantly depending upon the shape and thickness
of the foliage.
Ubee EVW32C Advanced Wireless Voice Gateway Subscriber User Manual • March 2017
if needed.
44. This value is used in the formula further below.
Attenuation Considerations
Material
Connecting Devices to the Network
Using the Access Control
Attenuation
2.4GHZ
0.24dB / foot
3dB to 4dB
2dB to 5dB
3dB to 4dB
6dB to 18dB 10dB to 30dB
2dB to 3dB
13dB
10dB
13dB to 19dB 25dB to 32dB
3dB
0.15dB / foot
Using the WLAN Option
5GHz
0.3dB / foot
3dB to 5dB
4dB to 9dB
6dB to 7dB
6dB to 8dB
20dB
20dB
6dB
0.3dB / foot
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