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Knowledge Base

FAQ-Which Impedance Modes Do FXS Interfaces on a 4FXS1FXO Interface Card Support

Publication Date:  2015-04-22  |   Views:  562  |   Downloads:  0  |   Document ID:  EKB1000073743

Contents

Issue Description

Which Impedance Modes Do FXS Interfaces on a 4FXS1FXO Interface Card Support?

Solution

FXS interfaces on a 4FXS1FXO interface card support two DC impedance modes: 50 ohm (default) and 800 ohm.

FXS interfaces on a 4FXS1FXO interface card support three AC impedance modes: 600 ohm (default), 270+(750||150 nF) ohm, and 275+(780||150 nF).