Compatible Systems 5.4 - Manual (Page 225)

Chapter 14 - General 219
Chapter 14 - General
Physical RS-232 Configuration: WAN Dialog
Box
Physical RS-232 Configuration: WAN Dialog Box
To access this dialog box, select WAN/Physical Configuration from the
Device View.
> Async/Sync
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.