Telezapper
Encyclopedia
The TeleZapper is a device designed to reduce the number of telemarketing
-related phone calls a household receives by imitating the tone signal normally played by a phone company to indicate a line has been disconnected. The Telezapper was created by Privacy Technologies, Inc, a wholly owned subsidiary of Royal Appliance Mfg. Co.
s to place many calls at one time. When this equipment detects that someone has answered one of the many calls it has made, it quickly transfers that call to an available agent. Calls which don't answer or numbers that are disconnected are not transferred to agents and the call is terminated automatically.
In this way, the agent is spared the time of dialing a call and waiting for an answer, and can simply speak to waiting calls which have been already set up. Additionally, if a number is determined to be disconnected, the equipment will usually mark that number as such and will not dial it again or as often.
or 'SIT': one of eight internationally standardized signals which indicate a call cannot be completed. Typically the 'Intercept' or 'IC' SIT is used, which indicates the number called has been disconnected or changed.
By playing this tone signal on the line, a predictive dialer
calling the household would hear it, assume the number was disconnected, terminate the call and likely mark the number as 'disconnected' in its database.
This "tricking" of the telemarketer's equipment was effectively highlighted in marketing material for the TeleZapper as a way to get back at the "obnoxious telemarketers."
some telemarketing firms have turned off the SIT tone detector altogether in response to the TeleZapper trick, rendering it wholly ineffective.
Another limitation is that the device does not work well with voice mail systems. This is because voice mail reroutes the call from a physical line to the voice mail service without the phone ever picking up.
Telemarketing
Telemarketing is a method of direct marketing in which a salesperson solicits prospective customers to buy products or services, either over the phone or through a subsequent face to face or Web conferencing appointment scheduled during the call.Telemarketing can also include recorded sales pitches...
-related phone calls a household receives by imitating the tone signal normally played by a phone company to indicate a line has been disconnected. The Telezapper was created by Privacy Technologies, Inc, a wholly owned subsidiary of Royal Appliance Mfg. Co.
Background
Telemarketing companies typically use predictive dialerPredictive dialer
A predictive dialer dials a list of telephone numbers and connects answered dials to people making calls, often referred to as agents. Predictive dialers use statistical algorithms to minimize the time that agents spend waiting between conversations, while minimizing the occurrence of someone...
s to place many calls at one time. When this equipment detects that someone has answered one of the many calls it has made, it quickly transfers that call to an available agent. Calls which don't answer or numbers that are disconnected are not transferred to agents and the call is terminated automatically.
In this way, the agent is spared the time of dialing a call and waiting for an answer, and can simply speak to waiting calls which have been already set up. Additionally, if a number is determined to be disconnected, the equipment will usually mark that number as such and will not dial it again or as often.
How it works
The TeleZapper is an appliance which plugs into a consumer telephone line. On detecting a ring and answer of any phone on the line, the Telezapper will immediately play a Special information toneSpecial information tone
In telephony, a special information tone is an international standard three beep signal indicating a call did not go through and usually precedes a recorded announcement explaining the problem...
or 'SIT': one of eight internationally standardized signals which indicate a call cannot be completed. Typically the 'Intercept' or 'IC' SIT is used, which indicates the number called has been disconnected or changed.
By playing this tone signal on the line, a predictive dialer
Predictive dialer
A predictive dialer dials a list of telephone numbers and connects answered dials to people making calls, often referred to as agents. Predictive dialers use statistical algorithms to minimize the time that agents spend waiting between conversations, while minimizing the occurrence of someone...
calling the household would hear it, assume the number was disconnected, terminate the call and likely mark the number as 'disconnected' in its database.
This "tricking" of the telemarketer's equipment was effectively highlighted in marketing material for the TeleZapper as a way to get back at the "obnoxious telemarketers."
Limitations of the TeleZapper
Because a predictive dialer merely checks for three conditions:- A SIT signal, as described above,
- a short response, like "hello", in which case it puts the called person through to a salesperson, and
- a long response, such as an answering machine message, in which case it hangs up and re-queues the number to call back later or leaves a sales message.
some telemarketing firms have turned off the SIT tone detector altogether in response to the TeleZapper trick, rendering it wholly ineffective.
Another limitation is that the device does not work well with voice mail systems. This is because voice mail reroutes the call from a physical line to the voice mail service without the phone ever picking up.
Caller confusion
Hearing the false SIT signal from a TeleZapper when calling a number can be very confusing to callers and/or telephone company personnel:- Many callers would assume the number was disconnected, hang up on hearing just the SIT, and not wait for an answer or listen to the recording.
- Operators placing a collect or person-to-person call could also conclude the number was disconnected by merely hearing the SIT and immediately abandon the call.
External links
- TeleZapper website (archived)