Chapter 3. Using the Express Configuration Program61203153L2-20 Express 3000 User Manual 3-13Flow ControlAllows communication devices (for example, the Express 3000and a PC) to deal with one device sending data at a rate higherthan the other device.Data Call TypeSelects the Call Type according to the ISDN line configuration.Hardware Controls the data transmission between the terminal(PC) and the Express 3000 (via EIA-232 pins). Recom-mended for high-speed data transmission.Software Uses characters embedded in the communication soft-ware to control the data transmission. The controlcharacters are known as XON/XOFF. Typically usedin slower transmission of data.No Control Disables any type of flow control.Speech Directs call control software to request a Speech circuitas the bearer capability for outgoing calls. Use withISDN lines configured for voice service. In some areasvoice service is less expensive than data service. ASpeech call type does not guarantee an end-to-enddigital connection with some local and long distancecarriers.Audio Directs call control software to request a 3.1 kHz Au-dio circuit as the bearer capability for outgoing calls.Used with an ISDN line configured for voice service.In some areas audio service is less expensive than dataservice. An Audio call type does not guarantee an end-to-end digital connection with some local and longdistance carriers.Data 56kbps Directs call control software to request a 64 kbps datacircuit that is rate-adapted down to 56 kbps.Data 64kbps Instructs call control software to request an unrestrict-ed 64 kbps data circuit. (Default for the Express 3000.)
