Ericsson W2x Series Wireless LAN Wlan Interface, Wireless Radio Channels, Internal Wlan Antennas

The Ericsson W20e, W21 and W25 support 1.8 and 3V SIM while the

Ericsson W20a only supports 3V SIM.

2.3	Wireless LAN (WLAN) Interface
	The W2x terminals act as wireless Access Point (AP) supporting IEEE
	802.11b/g standards.
	IEEE 802.11b operates in the unlicensed 2.4 GHz band and can
	theoretically achieve 11 Mb/s. Practical throughput, ranges from ~7 Mb/s
	(using UDP) to ~6 Mb/s (using TCP). IEEE 802.11g operates in the same
	band as 802.11b and has a theoretical top speed of 54 Mb/s. In practice,
	throughput around 25 Mb/s is more realistic.
	The transmit power is configurable and is limited to maximum 20 dBm.
	For wireless security the W2x terminals support WEP, WPA-PSK, WPA2-
	PSK and MAC Association Control.
2.3.1	Wireless Radio Channels
	The table below shows the IEEE 802.11 channels and their corresponding
	center frequencies:
	Channel	Channel	Geographic Indoor Usage
	Number	Frequency
	1	2412 MHz	US (United States), CA (Canada), ETSI (ETSI
			Countries), SI (Singapore), AS (Australia), NZ
			(New Zealand), SA (South Africa), MA (Malaysia)
	2	2417 MHz	US, CA, ETSI, SI, AS, NZ, SA, MA
	3	2422 MHz	US, CA, ETSI, SI, AS, NZ, SA, MA
	4	2427 MHz	US, CA, ETSI, SI, AS, NZ, SA, MA
	5	2432 MHz	US, CA, ETSI, SI, AS, NZ, SA, MA
	6	2437 MHz	US, CA, ETSI, SI, AS, NZ, SA, MA
	7	2442 MHz	US, CA, ETSI, SI, AS, NZ, SA, MA
	8	2447 MHz	US, CA, ETSI, SI, AS, NZ, SA, MA
	9	2452 MHz	US, CA, ETSI, SI, AS, NZ, SA, MA
	10	2457 MHz	US, CA, ETSI, SI, AS, NZ, SA, MA
	11	2462 MHz	US, CA, ETSI, SI, AS, NZ, SA, MA
	12	2467 MHz	ETSI, SI, AS, NZ, SA, MA
	13	2472 MHz	ETSI, SI, AS, NZ, SA, MA

Radio scanning makes the W2x terminals capable of sensing other access points of the allowed channel.

2.3.2Internal WLAN Antennas

The W2x terminals have two internal WLAN antennas (omni-directional).

The antennas are mounted orthogonally for best performance.

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