16 DEDICATED /L EASED L INE ANDSYNCHRONOUS APPLICATIONSThis chapter contains information about: Requirements for Analogue Synchronous Applications Configuring the Courier V.Everything modem for Leased LineOperation Dialing Using V.25 bis Software Synchronous dialing using AT commands Auto-dialingOverview This chapter will apply when you want the modem to work with devices,that communicate using synchronous protocols (i.e., mainframecomputers). The Courier V.Everything modem must be connected to asynchronous serial port.There are two ways to operate your modem in analogue synchronousmode:Dial Using MeansV.25bis Software Configuring the modem to enter synchronous mode whenyou power it on. Then, running communications softwarethat uses the V.25 bis protocol to control the dialingprocess.AT Commands Configuring the modem to dial out using AT commandsand then switching to synchronous mode once aconnection is made.
