Ubee Interactive Using the WLAN Option
Ubee UBC1303AB00 Advanced Wireless Voice Gateway Subscriber User Guide • June 2017 57
6.3.6.2 Estimating Wireless Cable Gateway to Wireless Client Distances
The information in this section helps you to determine how far a wireless cable gateway
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 wireless cable gateway and wireless clients reach the distance
threshold between each other, network performance degrades.
To determine wireless cable gateway placement:
1. Connect a wireless client to the wireless UBC1303AB00. Refer to Connecting Devices
to the Network on page 16 if needed.
2. Place the wireless client at around one meter (three feet) away from the
UBC1303AB00.
3. Obtain the RSSI value for the connected client. This value is used in the formula
further below.
4. Use the following table to determine what materials the wireless signal must travel
through to reach the desired wireless coverage distance.
5. Use the following table to determine what materials the wireless signal must travel
through to reach the desired wireless coverage distance.
Attenuation Considerations
Material
Attenuation
2.4GHZ 5GHz
Free Space 0.24dB / foot 0.3dB / foot
Interior Drywall 3dB to 4dB 3dB to 5dB
Cubicle Wall 2dB to 5dB 4dB to 9dB
Wood Door (Hollow/Solid) 3dB to 4dB 6dB to 7dB
Brick, Concrete Wall (Note 1) 6dB to 18dB 10dB to 30dB
Glass Window (not tinted) 2dB to 3dB 6dB to 8dB
Double Pane Coated Glass 13dB 20dB
Bullet Proof Glass 10dB 20dB
Steel / Fire Exit Door 13dB to 19dB 25dB to 32dB
Human Body 3dB 6dB
Trees (Note 2) 0.15dB / foot 0.3dB / foot
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.
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