Analog phone versus Digital phone
Analog Phone:
Converts air vibrations into an analogous electrical frequency.
Analogous:
Clear.
How the Analog phone used to send information?
Used to send audio or video signals in form of electrical pulse.
Electric pulse:
Change in duration of current.
Digital Phone:
Another name is VOIP.
Sends and receives calls through internet.
Voip:
Voice over internet protocol.
What is Voip phone system?
Converting standard telephone audio into digital format can be transmitted over internet.
How does a Voip phone system work?
Placing and transmitting telephone calls over an IP network, such as internet instead of PSTN.
PSTN:
Public switching telephone network.
Operated by national, regional or local telephony operators.
How the information is transmitted through network?
Data is to be sent in the form of binary code.
Who is inventor of Mobile phone?
Martin cooper.
How the information is transmitted in analog and digital signals?
Discrete:
Different in nature of something else in same type.
Difference between Analog phones and Digital phones?
| Features | Analog | Digital |
|---|---|---|
| Call quality | Poor. | Very clear. |
| Security | Can be intercepted. | Secure. |
| Cost | Less. | More. |
| Features | Call forwarding. Call waiting. | Call waiting. Call forwarding. Voice mail.Text messaging.Numeric pages.Internet access. |
| Talktime | 2hrs. | 2-10hrs. |
| Stand by | 24-40hrs. | 3-17hrs. |
| Advantages | Extensive coverage area.More equipment options.Data compatible options. | Improved call quality.Efficiency improved. Ready for future innovation. |
| Disadvantages | Battery use.Unable to use future.Service. | Less equipment available. |