Compatible Systems 5.4 Manuale Utente

Physical RS-232 Configuration: WAN Dialog Box

To access this dialog box, select WAN/Physical Configuration from the 
Device View.

This set of radio buttons determines whether this interface will use the asyn-
chronous or synchronous mode of communication.

•

If Async is selected, the interface will communicate asynchronously 
(using start and stop bits) with the device it is connected to. This mode 
of communication is typically used by modems.

•

If Sync is selected, the interface will communicate synchronously (using 
a separate clock) with the device it is connected to. This mode of commu-
nication is typically used by CSU/DSU’s and ISDN Terminal Adapters.

v Note:  Interfaces set for asynchronous operation do not use parity, and use 
one stop bit.

v Note:  Some high-speed WAN interfaces (i.e. V.35) may only support 
synchronous communications. This set of radio buttons will not appear in the 
CompatiView Physical Configuration: WAN Dialog Box for these interfaces.