Analog RS232 sync /async Dialup or leased line V.36 modem, with abundant security features. Dialup or 2-/4-wire leased line. Exceptional choice for managing wide-ranging access to a central host or network. Sync or async operation. Programmable dialback security remembers codes for 50 nodes. The Modem 3600 Rackmount Card has top data center security and high speed and 50-number callback security. You get digital speeds without being charged the monthly premium. Plus, the Modem 3600 Rackmount Card can transmit sync or async data on leased or dialup analog lines.With data-transfer calls originating from one modem, you centralize and consolidate your corporate call billing. And remote configuration enables you to tend to all those distant modems from your office!You get the full complement of standard functions required in today''s data centers: multiple configuration options (remote, front-panel LCD, or AT command set), full Group III fax capability, V.8-compliant automode, and automatic rate adaptation. That means if your lines are fully conditioned, you get the fastest possible data rates between two modem.The Modem 3600 Rackmount Card has top data center security and high speed, and 50-number callback security. You get digital speeds without being charged the monthly premium. Plus, the Modem 3600 Rackmount Card can transmit sync or async data on leased or dialup analog lines. With data-transfer calls originating from one modem, you centralize and consolidate your corporate call billing. And remote configuration enables you to tend to all those distant modems from your office! You get the full complement of standard functions required in today''s data centers: multiple configuration options (remote, front-panel LCD, or AT command set), full Group III fax capability, V.8-compliant automode, and automatic rate adaptation. That means if your lines are fully conditioned, you get the fastest possible data rates between two modems.