Viking DLE-200B Two-Way Line Simulator

Compatible with fax machines and modem speeds up to 28.8 kbps, Precise dial tone, Switch selectable ring cadence, Provides CPC breaks after hang-up on either port, Switch selectable audio attenuation, Can provide 2 seconds of precise dial tone before ringdown, Provides ringback signal to calling device, One or two-way ringdown capability, Switch selectable ring count, Ringdown and dial tone off mode (ideal for prison phone communications, etc.), 32VDC talk battery