Asterisk: The Future of Telephony, 2nd Edition

Name

Milliwatt() — Generates a 1,000 Hz tone

Synopsis

Milliwatt()

This application generates a constant 1,000 Hz tone at 0 dbm (μlaw). This application is often used for testing the audio properties of a particular channel.

; generate a 1000HZ tone
exten => 123,1,Milliwatt()

Warning

Please note that there is a service that the carriers use to test circuits for loss, that folks in the industry have nicknamed “1,000-cycles.” The thing is, the tone the carrier equipment sends is actually 1,004 Hz, so if you want to test circuit loss on an analog channel from Asterisk, Milliwatt() may not give you exactly what you want.

See Also

Echo(), Playtones()