HP MSR 4-port FXS / 1-port FXO DSIC Module
HPE MSR 4-port FXS / 1-port FXO DSIC Module, HP MSR, 540 g, 4 x FXS 1 x FXO
HPE MSR 4-port FXS / 1-port FXO DSIC Module. Compatibility: HP MSR. Weight: 540 g. I/O ports: 4 x FXS 1 x FXO