Specifications

TD 92326GB

2009-03-10 / Ver. E

Installation and Operation Manual

VoIP Gateway

2 Select/Enter the following settings.

3 Click “Reserve”.

4 New empty row appears and more addresses can be added.

7.7 Link – Speed and Duplex Settings

The Link is default set to “Auto” which means that auto negotiation is enabled. This

setting is recommended. Auto negotiation detects the speed (for example, 10MBps,

100Mbps) and duplex (half-duplex or full-duplex) settings of the device on the other end

of the wire and adjusts to match those settings. During speed/duplex negotiation the

device transmits its own abilities to the peer device so that the peer can use the

appropriate settings.

1 Select ETHX > Link

Figure 36. Speed and Duplex setting

2 Select speed/duplex in the Link drop-down list.

3 Click “OK”.

7.8 802.1X – Authentication

Note: Not supported by Ascom.

802.1X, Port-Based Network Control, is an IEEE standard that allows LAN devices to

perform an authentication handshake within the 802.3 link layer (Ethernet). The

authentication is encapsulated within EAP over LAN (EAPOL) frames. No other traffic,

except EAPOL is allowed prior to a successful authentication. 802.1X must not be

considered a bullet-proof security mechanism, since all traffic following the authentication

phase is not authenticated.

The standard specifies the following parties participating in an 802.1X authentication:

• Supplicant: The party supplying credentials towards an authenticator on the other side

of a point-to-point link. An IP phone fulfills a supplicant's role.

• Authenticator: The party facilitating the authentication. A switch will usually be the

authenticator.

• Authentication Server: The party providing the authentication service to the

authenticator. The 802.1X standard mentions a RADIUS server to be an authentication

server.

Field name Description

• IP address Enter the IP address you want to reserve

• MAC address Enter the MAC address the IP address is reserved for

• Host name Enter the name of the device (which has the reserved

IP address)

Figure 36.