Cisco Systems VR-561 manual Ring frequency number No ring frequency number, VR-580

Cisco IOS Voice, Video, and Fax Commands: R Through Sh

ring frequency

ring frequency

To specify the ring frequency for a specified Foreign Exchange Station (FXS) voice port, use the ring frequency command in voice-port configuration mode. To restore the default value, use the no form of this command.

ring frequency number

no ring frequency number

Syntax Description	number	Ring frequency (hertz) used in the FXS interface. Valid entries on the
		Cisco 3600 series are 25 and 50. Valid entries on the Cisco MC3810
		multiservice concentrator are 20 and 30.
Defaults	25 Hz on the Cisco 3600 series routers and 20 Hz on the Cisco MC3810 multiservice concentrators.

Command Modes

Command History

Voice-port configuration

Release	Modification
11.3(1)T	This command was introduced on the Cisco MC3810 multiservice
	concentrator.

Usage Guidelines Use the ring frequency command to select a specific ring frequency for an FXS voice port. Use the no form of this command to reset the default value. The ring frequency you select must match the connected equipment. If set incorrectly, the attached phone might not ring or might buzz. In addition, the ring frequency is usually country-dependent. You should take into account the appropriate ring frequency for your area before configuring this command.

This command does not affect ringback, which is the ringing a user hears when placing a remote call.

Examples The following example configures the ring frequency on the Cisco 3600 series for 25 Hz:

voice-port 1/0/0 ring frequency 25

The following example configures the ring frequency on the Cisco MC3810 multiservice concentrator for 20 Hz:

voice-port 1/1 ring frequency 20

Cisco IOS Voice, Video, Fax Command Reference

VR-580