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Dual Standard – DSTS 2 with DSP

The DSTS 2 first introduced in 1988 has remained a favourite with many telephone administrations around the world because of its reliability and ease of use. Since its introduction, the design has evolved in line with changes in the technology and services deployed in the telephone network to its present form incorporating DSP technology.,Digital Services Protection (DSP) Test Telephones are designed to operate safely in situations where telephone wiring may be carrying Digital traffic, Voltage feed to remote electronics or Hazardous voltages that result from fault conditions or misuse of the cable

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