Ericsson W21 - Manual (Page 25)

Configuration and Management
Figure 18 – Wireless LAN: WEP (64 BIT) page
Figure 19 – Wireless LAN: WEP (128 BIT) page
Enter an encryption key in the “Encryption key:” field.
Click Next to proceed.
2.3.3.3 WPA/WPA2 Passphrase
WPA and WPA2 authentication and encryption require a passphrase. Each
device on your wireless network has to be configured with the same
passphrase as the Ericsson W21. The encryption master key is derived
from the passphrase and the network name (SSID) of the device.
1/1551-CRH 102 167 Uen Rev D 2007-11-16 23