Chapter 1. Overview1-4 Express 3010/3110 User Manual 61200239L1-20DIALINGDialing from the Express is accomplished in the following ways:• Using a VT 100 terminal connected to the rear panel EIA-232port. (See VT 100 Terminal Emulation on page 2-7, Configuring theExpress on page 3-1, and Configuring the Express for V.25 bis In-bandDialing on page 3-23.)• Over the DTE interface using the AT command set. (See ATCommands and S-Registers on page A-1.)• V.25 bis in-band (used in applications such as LAN/WANbridging). (See Configuring the Express for V.25 bis In-band Dialingon page 3-23.)• When DTR is raised. Routers can be configured when bandwidthon their dedicated line is exceeded. In high-traffic times, thisallows the Express to dial out over the ISDN for an extra 128 kbpsof bandwidth-on-demand.RECOMMENDED OPERATING PROTOCOLSThe Express supports a wide range of operating modes. Many combi-nations of circuit type, protocol, and data rate may be selected. Thecombinations shown in Table 1-1 on page 1-5 are recommended.Table 1-1 shows that a given data rate may be achieved by more thanone protocol/rate adaption selection. The table is organized so thatselections with the least transport delay are closer to the top of the ta-ble for any given circuit type. Therefore, choose a protocol and ratecloser to the top of the protocol rate list for a given circuit type.
