TANDBERG D12809 Benutzerhandbuch

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TANDBERG 
TANDBERG and Wireless LANs
 
2.2.3  Mode  
Requirement:  Mandatory 
 
The mode setting allows for two different modes of operation.  
 
Adhoc:  Also known as peer to peer and IBSS Ad Hoc.  This mode is used when 
communication is required between two units and an access point is not available.  
Additionally , if there is no need to communicate with a wired unit on a standard LAN, you 
can use this option.  This is similar to a ‘back to back’ Ethernet cable used to connect two IP 
enabled devices without a LAN. 
 
Managed:  Also known as Infrastructure, Base Station, or Access Point.  When using an 
access point to connect a wired LAN to a wireless LAN.  This is the most popular 
application.  If this mode is used, the SSID in the TANDBERG unit must match the SSID in 
the access point. 
 
2.2.4  Security – Encryption 
The TANDBERG wireless 802.11b feature also supports Wired Equivalent Privacy (WEP) 
with the choice of 64-bit, 128-bit, or no encryption.  This feature allows the wireless network 
to prevent an unauthorized person from using the network resources.  It is important to 
remember that the encryption keys in the access point and in the TANDBERG unit must 
match.  If the encryption keys do not match, and the SSID is correct, you will get an IP 
address but will not be able to transmit video and audio. 
 
The encryption keys can be entered as a hexadecimal or as ASCII using a ‘*’ prefix.  
 
Example: 
 
Deffe57563dee 
hexadecimal 
 
*secretkey 
 
ASCII 
 
The 64-bit key can be 10 hexadecimals or ‘*’ + 5 ASCII characters.  The 128-bit keys can 
be 26 hexadecimals or ‘*’ + 13 ASCII characters. 
 
Additional security is offered in some access points by requiring the MAC addresses of the 
802.11b NIC cards to be registered in the access point.  Only units with the MAC 
addresses can use the access point. 
 
3.  Applications 
3.1  Why Wireless? 
The IP network is becoming a viable network for video conferencing.  Now that more 
companies are beginning to switch  to IP for their video conferencing needs, alternate 
methods of transmission are becoming necessary.  The use of wireless 802.11b is allowing