128
Application Hints
This section provides information about the range of Symphony-HRF
products, how to reduce interference with other devices, and information on
how to use the cordless network with common applications and peripheral
devices.
Range of Symphony-HRF Products
Two Symphony-HRF products can communicate over a distance of up to 150
feet. Range is highly dependent upon the particular environment in which
the products are used. Obstacles, such as walls and ceilings, weaken the
radio signals. Metal objects, such as screen doors, windows screens, and
filing cabinets, also have an adverse effect on range. You should try to avoid
placing a sheet of metal (like a filing cabinet) between two Symphony
products.
Reducing Interference
The Symphony Cordless Networking Suite uses frequency hopping spread
spectrum technology in the 2.4-GHz band to communicate. This is the same
frequency band used by microwave ovens and 2.4-GHz phones. Frequency
hopping technology is designed to minimize interference so while you may
notice a reduction in performance, your devices will not cease to function.
Proxim recommends against installing the base station of the 2.4-GHz phone
between two Symphony-HRF products.
Hint:
If you suspect a 2.4-GHz telephone is severely degrading the
performance of the cordless network, temporarily disconnect
power from the phone’s base station to determine if this addresses
the performance concern.
Home Network Security
Frequency hopping technology is inherently secure. Frequency hopping
signals are difficult to detect and decode because they hop several times a
second from frequency to frequency in a pseudorandom sequence.
Also, the Security Code adds an additional degree of protection because
even if a network infiltrator is using another Symphony-HRF or Symphony
