Ericsson W21 - Manual (Page 26)

Configuration and Management
A WPA or WPA2 passphrase is case sensitive and consists of between 8
and 63 optional characters. It is recommended that the passphrase
contains at least 20 characters.
Figure 20 – Wireless LAN: WPA page
Figure 21 – Wireless LAN: WPA2 page
Type a unique passphrase in the “Passphrase” field.
Note: Avoid using special characters (such as :, “ and ¤) when entering a
passphrase.
Click Next to proceed.
24 1/1551-CRH 102 167 Uen Rev D 2007-11-16