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  2. Call admission control - Wikipedia

    en.wikipedia.org/wiki/Call_Admission_Control

    CAC is used in the call set-up phase and applies to real-time media traffic as opposed to data traffic. CAC mechanisms complement and are distinct from the capabilities of quality of service tools to protect voice traffic from the negative effects of other voice traffic and to keep excess voice traffic off the network.

  3. Anonymous call rejection - Wikipedia

    en.wikipedia.org/wiki/Anonymous_call_rejection

    In this case, software on the handset itself screens the calls, without relying on network switches. These features are activated though the phone's menus. On more modern landline services, particularly those using VoIP, ACR is sometimes activated and deactivated using a Web interface, rather than by dialling codes.

  4. VoIP spam - Wikipedia

    en.wikipedia.org/wiki/VoIP_spam

    VoIP spam or SPIT (spam over Internet telephony) is unsolicited, automatically dialed telephone calls, typically using voice over Internet Protocol (VoIP) technology. [1]VoIP systems, like e-mail and other Internet applications, are susceptible to abuse by malicious parties who initiate unsolicited and unwanted communications, such as telemarketers and prank callers.

  5. Wi-Fi calling - Wikipedia

    en.wikipedia.org/wiki/Wi-fi_calling

    A voice network includes call gateways in addition to the Wi-Fi access points. The gateways provide call handling among wireless IP phones and connections to traditional telephone systems. The Wi-Fi network supporting voice applications must provide much stronger signal coverage than what's needed for most data-only applications.

  6. Xfinity - Wikipedia

    en.wikipedia.org/wiki/Xfinity

    Comcast Cable Communications, LLC, doing business as Xfinity, is an American telecommunications business segment and division of the Comcast Corporation.It is used to market consumer cable television, internet, telephone, and wireless services provided by the company.

  7. VoIP phone - Wikipedia

    en.wikipedia.org/wiki/VoIP_phone

    Yealink Network Technology Co Ltd T27G VoIP Telephone Avaya IP phone. The overall hardware may look like a telephone or mobile phone. A VoIP phone has the following hardware components An handset with a headphone and a microphone, unless the whole telephone is a hand-held device containing these; A loudspeaker to act as a speakerphone

  8. Voice over IP - Wikipedia

    en.wikipedia.org/wiki/Voice_over_IP

    Phone calls between subscribers of the same provider are usually free when flat-fee service is not available. [12] A VoIP phone is necessary to connect to a VoIP service provider. This can be implemented in several ways: Dedicated VoIP phones connect directly to the IP network using technologies such as wired Ethernet or Wi-Fi. These are ...

  9. List of mobile virtual network operators in the United States

    en.wikipedia.org/wiki/List_of_mobile_virtual...

    Native Wi-Fi calling refers to the ability of mobile phones on the service to seamlessly use Wi-Fi rather than the cellular network to connect normally dialed calls, when enabled. It does not refer to the ability to use third-party programs to make calls over Wi-Fi networks, which is generally always supported on smartphones.