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Configuration:
Basic Advanced TCP/IP Wireless
VT2400/VT2500 Series Voice Gateway User Guide
10
Installation
Follow the steps and guidelines in this section to physically set up and position the
VT2400/VT2500
voice gateway
on a flat surface or mount it on the wall.
Positioning Your Router for Optimal Wireless Performance (
VT2500 only
)
Your voice gateway has an embedded wireless router that uses a radio transmission technology defined by the
Institute of Electrical and Electronics Engineers (IEEE) called 802.11 Wireless Fidelity (Wi-Fi). This standard is
subdivided into distinct categories of speed and the frequency spectrum used, designated by the lowercase letter
after the standard.
For example, the router supports both the ‘b’ and ‘g’ specifications. The 802.11b specification transmits data rates
up to 11 Mbps while the 802.11g specification transmits data rates up to 54 Mbps. These are theoretical standards
so performance may vary. The radio waves radiate in a donut-shaped pattern. The waves travel through walls and
floors, but transmission power and distance are affected. The theoretical distance limit is 1,000 feet (305 meters),
but actual throughput and distance varies.
Both standards operate in the 2.4 GHz range, meaning other electrical appliances also might interfere with the
router – televisions, radios, microwave ovens, or 2.4 GHz cordless telephones. Therefore, positioning the
voice
gateway
where it encounters the least interference helps maintain a better connection.
The following table lists the expected wireless range of the router. This table is only a guide and coverage varies
due to local conditions.
To achieve the best wireless performance, review these guidelines before deciding where to place the
voice
gateway
:
•
Placing the
voice gateway
in the center of your network is the best location because the antenna sends out
the signal in all directions.
•
Placing the
voice gateway
in a higher location, such as on top of a cabinet, helps disperse the signal cleanly,
especially to receiving locations on upper stories.
•
If possible, position the
voice gateway
so there is direct line of sight between the unit and your other home
network devices.
•
Avoid placing the
voice gateway
next to large solid objects like computer cases, monitors, walls, fireplaces,
etc. This helps the signal penetrate more cleanly.
•
Other wireless devices such as televisions, radios, microwaves, and 2.4 GHz cordless telephones can
interfere with the signal. Keep these devices away from the
voice gateway
.
•
Mirrors, especially silver-coated, can reduce transmission performance.
Data Rate
Open Area
Closed Area
54 Mbps
Up to 100 ft (30m)
Up to 60 ft (18 m)
11 Mbps
Up to 900 feet (275 m)
Up to 160 feet (49 m)
5.5 Mbps
Up to 1300 feet (396 m)
Up to 200 feet (61 m)
2 or 1 Mbps
Up to 1500 feet (457 m)
Up to 300 feet (91 m)