User's Manual

AS4020 STs

W Series

The ST W is designed for packet data and voice and use an outdoor unit and an internal

service interface unit with a wireless LAN antenna attached. The STs are powered from the

AC mains supply. The wireless LAN interface uses IEEE 802.11b Standard for high speed

wireless LANs.

Note: This SIU should not be installed in environments where the ambient temperature

is greater than 35° C

The range of the wireless LAN is dependant on the environment in which the unit is deployed.

In ideal conditions and the approximate range is shown in the table below. For increased

range the antenna provided with the unit may be disconnected and replaced with a high gain

antenna provided by the service provider.

Speed Environment

11 Mb/s 5.5 Mb/s 2 Mb/s 1 Mb/s

Open

Environment

160 m (525 ft.) 270 m (885 ft.) 400 m (1300ft.) 550 m (1750ft.)

Semi-open

Environment

50m(165ft.) 70m (230 ft.) 90m (300 ft.) 115m (375 ft.)

Closed

Environment

25 m(80 ft.) 35 m(115ft.) 40 m (130ft.) 50 m (165ft.)

ST –W (type 42)

The ST-W is AS4020 compatible and supports the following features:

• Phone - 2 RJ11 phone connectors

• Up to 2 voice calls - uses independent uplinks

• Voice either 32k ADPCM (max 2 channels) or 64k PCM (max 1 channel)

• Analogue Fax/Modem supported as for normal voice signal - no additional hardware

required

• up to 4 RW codes per ST

• 802.11b Wireless LAN data interface. This interface is set from the PC using at the

wireless LAN connection.