Chapter 1. Overview1-2 Express 3000 User Manual 61203153L2-20Service Profile Indentifier (SPID) numbers. In areas where the tele-phone company supports SPID download, this information automat-ically downloads to the modem, and the Express 3000 becomes plug-and-play with the ISDN line.ANALOG DEVICES SUPPORTEDThe Express 3000 supports up to two analog devices such as tele-phone, FAX machine, or analog modem in addition to the computerconnection for data transmissions. When transmitting data at maxi-mum throughput over both B channels using Multilink PPP, theExpress 3000 modem automatically detects calls on the analog ports.Upon detection, the Express 3000 modem adjusts the speed of the datacall to 64 kbps using one B channel and accepts the analog/voice callon the other B channel. After completing the analog/voice call, theExpress 3000 modem automatically resumes data transfer over bothB channels.REMOTE ACCESSRemote access gives Management Information Systems (MIS) manag-ers the flexibility of adjusting the configuration of remote units overthe ISDN line.EXPRESS 3000 FEATURESThe Express 3000 provides the following features:• Data rates up to 230.4 kbps—more than six times faster than a V.34analog modem• Simple setup with the ADTRAN Express Configuration Soft-ware™• Automatic SPID and Switch Type detection using ADTRAN Ex-pert ISDN (covered under patent number 5,715,241), or Auto SPIDdownload, where available• LZS ® technology from hi/fn™ for up to 4 to 1 compression• Support for Always On Dynamic ISDN (AO/DI) technology
