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2. Time-to-digital converter - Wikipedia

   en.wikipedia.org/wiki/Time-to-digital_converter

   The time-to-digital converter measures the time between a start event and a stop event. There is also a digital-to-time converter or delay generator. The delay generator converts a number to a time delay. When the delay generator gets a start pulse at its input, then it outputs a stop pulse after the specified delay.

3. Time switch - Wikipedia

   en.wikipedia.org/wiki/Time_switch

   A time switch (also called a timer switch, or simply timer) is a device that operates an electric switch controlled by a timer. Intermatic introduced its first time switch in 1945, which was used for "electric signs, store window lighting, apartment hall lights, stokers, and oil and gas burners." A consumer version was added in 1952.

4. List of telephone switches - Wikipedia

   en.wikipedia.org/wiki/List_of_telephone_switches

   GTD-3 EAX (Toll switch, NOT CCS7 capable although CCIS capable) GTD-5 EAX (Class 5 switch, many in use today, was the primary switch in former GTE exchanges. Now supported by Lucent.) GTD-120 Digital PABX; GTD-1000 Digital PABX; GTD-4600 Digital PABX; OMNI-S1 Digital PABX; OMNI-S2 Digital PABX; OMNI-S3 Digital PABX

5. Digital delay generator - Wikipedia

   en.wikipedia.org/wiki/Digital_delay_generator

   A digital delay generator (also known as digital-to-time converter) is a piece of electronic test equipment that provides precise delays for triggering, syncing, delaying, and gating events. These generators are used in many experiments, controls, and processes where electronic timing of a single event or multiple events to a standard timing ...

6. System X (telephony) - Wikipedia

   en.wikipedia.org/wiki/System_X_(telephony)

   System X has gone through two major editions, Mark 1 and Mark 2, referring to the switch matrix used. The Mark 1 Digital Subscriber Switch (DSS) was the first to be introduced. It is a time-space-time switch setup with a theoretical maximum matrix of 96x96 Time Switches. In practice, the maximum size of switch is a 64x64 Time Switch matrix.

7. GTD-5 EAX - Wikipedia

   en.wikipedia.org/wiki/GTD-5_EAX

   The GTD-5 EAX (General Telephone Digital Number 5 Electronic Automatic Exchange) is the Class 5 telephone switch developed by GTE Automatic Electric Laboratories. This digital central office telephone circuit switching system is used in the former GTE service areas and by many smaller telecommunications service providers .