Is there such a signalling device as this?

Is there such a signalling device as this?
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Dog just showed me this last night. You could hang it on the inside of your door and set it to call you when someone knocks. The vibrations from the knocking should be enough to set off the accelerometer.
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Related questions

In asynchronous serial communication the physical layer provides ___________ a. start and stop signalling b. flow control c. both start & stop signalling and flow control d. only start signalling

Description : In asynchronous serial communication the physical layer provides ___________ a. start and stop signalling b. flow control c. both start & stop signalling and flow control d. only start signalling

Last Answer : c. both start & stop signalling and flow control

The portion of physical layer that interfaces with the media access control sublayer is called ___________ a. physical signalling sublayer b. physical data sublayer c. physical address sublayer d. physical transport sublayer

Description : The portion of physical layer that interfaces with the media access control sublayer is called ___________ a. physical signalling sublayer b. physical data sublayer c. physical address sublayer d. physical transport sublayer

Last Answer : a. physical signalling sublayer

Explain the process of inter-register signalling.

Description : Explain the process of inter-register signalling.

Last Answer : Registers are used in common control exchanges to store and analyze routing data. They are provided on a common basis is a single register provides routing data for a number of speech circuits. Once a call ... it is released and the originating register signals to the next register.

What are the advantages of CCS over in-channel signalling?

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Last Answer : The advantages of CCS over in-channel signalling are listed below: a. Information can be exchange between the processors much more rapidly than when channel associated signaling is used. b ... for functions other than call processing, for example for maintenance or network management purposes. 

What are different control function categories, explain, how they help in signalling and control.

Description : What are different control function categories, explain, how they help in signalling and control.

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Explain what is DTMF signalling.

Description : Explain what is DTMF signalling.

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Describe the various signalling techniques. Compare in-channel signalling with common channel signaling, which is more advantageous.

Description : Describe the various signalling techniques. Compare in-channel signalling with common channel signaling, which is more advantageous.

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The Signalling connection control part (SCCP) and message transfer part (MTP) together are referred to as (A) Signal Switching Points (SSPs) (B) Signal Transfer Points (STPs) (C) Signal Control Points (SCPs) (D) Network service part (NSP)

Description : The Signalling connection control part (SCCP) and message transfer part (MTP) together are referred to as (A) Signal Switching Points (SSPs) (B) Signal Transfer Points (STPs) (C) Signal Control Points (SCPs) (D) Network service part (NSP)

Last Answer : (D) Network service part (NSP)

Signalling transfer point (STP) exist in (A) Strowger exchange (B) SS7 (C) Local area network (D) PABX

Description : Signalling transfer point (STP) exist in (A) Strowger exchange (B) SS7 (C) Local area network (D) PABX

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SS7 Protocol uses: (A) Out of band signalling. (B) Associated signalling. (C) Speech control signalling. (D) No signalling.

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SPC is used for (A) Carrying Exchange Control Functions (B) Carrying Subscriber Control Functions (C) Exchange Hardware (D) Signalling Purpose

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Common channel signalling in SS7 is (A) out band control channel. (B) in band control channel. (C) speech control channel. (D) none of the above.

Description : Common channel signalling in SS7 is (A) out band control channel. (B) in band control channel. (C) speech control channel. (D) none of the above.

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Which of the following is not a characteristic of Cdma2000? a) Adaptable baseband signalling rates b) Adaptable baseband chipping rates c) Multicarrier technologies d) OFDMA

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____________ carries signalling and synchronizing commands. a) Traffic channels b) Control channels c) Signalling channels d) Forward channels

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Write any four advantages of VF signalling over DC signalling.

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