Model 3520 Modem-On-Hold Tester: Product Overview The Rochelle Model 3520 Modem-On-Hold Tester is a stand-alone instrument for development and testing of V.92 Modems and Integrated Access Devices The Model 3520 features user-friendly software that allows the user to set CO line parameters, ringing voltage and frequency, and signal levels. The Model 3520 includes selectable 6, 9, and 15Kft artificial lines (26 AWG). Secondary CO line permits end-to-end voice path between two client modems Pass-Through Mode places the CO-line simulator in series between a client modem and other testers or an external POTS line Digital Connect Modem places the CO-line simulator in series between a client modem and a Remote Access Server using T1 Robbed Bit Signaling. Download User's ManualDownload Datasheet

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