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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