1. What is an IP phone?                                                       

                                 Voice over internet protocol, or VoIP, is a technology Which Lets you place phone calls over the internet. IP phones connect to a telephone service through the Internet, with an Ethernet cable or even Wi-Fi link.
IP Phone
IP Phonr
                                                 Hence VoIP telephones commonly known as IP telephones, The telephone converts analog telephony sound into a digital format which could be transmitted over the net and converts incoming electronic signals into standard phone audio.
                                            You’ve Got probably seen IP telephones in several offices And never realized they had been VoIP. IP telephones include desk telephones, cordless telephones, and conference telephones which resemble your daily office telephone but use another technology for powering calls.
                                                  Characteristics and capabilities of IP telephone not found in conventional analog phones. They also have extra performance requirements because telephone calls are placed on the internet rather than the legacy public switched phone network (PSTN).

2. How does an IP phone work?

VoIP telephones need lots of protocols to ease the delivery of voice communications over the IP. Telephones are assigned IP addresses via the Dynamic Host Configuration Protocol (DHCP), which configures the system and the VoIP parameters. A domain name system (DNS) monitors the IP addresses to allow devices, such as IP telephones, to link to one another.

3. The Brands which Manufacturing  IP phone are

The manufacturing brands of IP phones are
  • Aastra
  • Cisco
  • Fanvil
  • Grandstream
  • Htek
  • Polycom
  • Snom
  • Yealink

4. Advantages of IP phone over a landline phone  

        VoIP Telephones offer Organizations several benefits.
  • Organizations can reduce Calling prices by switching to VoIP services. While conventional analog telephones may have reduced upfront costs, they’re more expensive to support, update and integrate with communications programs.
  • IP phones also provide cheaper Long-distance and global calls, as VoIP telephone calls are charged at the local cost of the telephone destination.
  • VoIP telephones offer greater Choice and scalability than conventional telephones.
  • IP telephones Can get Their power over an Ethernet cable, instead of utilizing the electricity source. This can be known as PoE (Power on Ethernet).
  • Some high-end VoIP telephones have Bluetooth, which means you can connect a headset, and the telephone can be everywhere.

 5. Disadvantages of IP phones

  • IP telephones, but do have downsides.
  • With inadequate bandwidth, telephone calls can experience latency, which may lead to delays and lost calls.
  • When an organization has a power or internet outage, users can’t make calls out of their VoIP telephones.
  • Emergency calls with VoIP telephones can be tough because IP addresses don’t offer you the specific location of callers.

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