The University of Texas at Austin

Telephone Service (Legacy)

General Information: System Tones

Call Waiting Tone: Two short bursts of 440 Hz tone at 10-second intervals signifying that you have another incoming call. This tone is heard through the receiver while you are talking on the phone.

Circuit Busy Tone: Fast busy — overflow. Low tone bursts at twice the normal busy tone rate, indicating that all paths to the equipment serving the called party are busy.

Confirmation Tone: One or two short bursts of "Busy" tone to verify that a feature code or function has been completed.

Dial Tone: A constant high pitched tone (a mixture of 350 and 440 Hz) indicating that the system is ready to process your call. It is essential that users listen for this tone before dialing phone numbers, especially during times of heavy telephone use (e.g. during snowstorms). The system will not recognize digits that are dialed before a dial tone is established. There is no second dial tone after dialing 9 when calling off campus.

Off-Hook Queue Tone: One burst of 440 Hz tone followed by silence after dialing a number. The tone signifies that all circuits are busy and the system is searching for a free line. STAY ON THE LINE and your call will go through.

Queue Announcement: Works like Off-Hook Queue Tone but, instead of a tone, it plays the recorded announcement, "Please continue holding, your call will be processed."

Receiver Off-Hook Tone: Loud repetitive bursts of attention-getting tones to instruct users to hang up. Usually caused by keeping the phone off-hook too long before dialing or by not hanging up after completing a call.

Ringback Tone: Heard by the calling party to signify that the called telephone is ringing. Also known as audible ringing. The ringback tone does not necessarily correspond in timing with the ringing at the called station. (This is why it is possible for a party to answer the phone before the caller hears ringing.)

Special Information Tone (SIT): Three ascending tones preceding an information message such as one indicating that the party has dialed a number that is disconnected or out of service.

Splash Ring: A short, partial ring at a telephone, usually indicates activation of a feature such as Make Set Busy.

Station Busy Tone: Low-pitched tone interrupted sixty times per minute. This tone indicates that the called station is off-hook or busy.

Stutter (Special) Dial Tone: Three beeps followed by normal dial tone. It signifies that you are either using a feature or are about to enter the long distance system.

Last updated April 10, 2012 @ 1:43 pm

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