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  2. List of SIP response codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SIP_response_codes

    This status is also returned if the domain in the Request-URI does not match any of the domains handled by the recipient of the request. [1]: §21.4.5 405 Method Not Allowed The method specified in the Request-Line is understood, but not allowed for the address identified by the Request-URI. [1]: §21.4.6 406 Not Acceptable

  3. SIP URI scheme - Wikipedia

    en.wikipedia.org/wiki/SIP_URI_scheme

    A SIP address is written in user@domain.tld format in a similar fashion to an email address.An address like: sip:1-999-123-4567@voip-provider.example.net. instructs a SIP client to use the NAPTR and SRV schemes to look up the SIP server associated with the DNS name voip-provider.example.net and connect to that server.

  4. Voice over IP - Wikipedia

    en.wikipedia.org/wiki/Voice_over_IP

    The VoIP E911 emergency-calling system associates a physical address with the calling party's telephone number. All VoIP providers that provide access to the public switched telephone network are required to implement E911, a service for which the subscriber may be charged. "VoIP providers may not allow customers to opt-out of 911 service."

  5. VoIP phone - Wikipedia

    en.wikipedia.org/wiki/VoIP_phone

    Traditional PSTN phones can be used as VoIP phones with analog telephone adapters (ATA). A VoIP phone or application may have many features an analog phone doesn't support, such as e-mail-like IDs for contacts that may be easier to remember than names or phone numbers, or easy sharing of contact lists among multiple accounts.

  6. Enhanced 911 - Wikipedia

    en.wikipedia.org/wiki/Enhanced_911

    The 911 obligations were imposed only on "interconnected VoIP." The FCC defined "interconnected VoIP" as VoIP over broadband that interconnects with the public switch telephone network. [27] VoIP that is not interconnected, such as two individuals talking to each other over the Internet while playing computer games, does not fall under the ...

  7. Session Initiation Protocol - Wikipedia

    en.wikipedia.org/wiki/Session_Initiation_Protocol

    SIP connection is a marketing term for voice over Internet Protocol (VoIP) services offered by many Internet telephony service providers (ITSPs). The service provides routing of telephone calls from a client's private branch exchange (PBX) telephone system to the PSTN.

  8. Can My Employer Ban Me From Speaking Spanish To Co-Workers? - AOL

    www.aol.com/news/2014-06-03-can-my-employer-ban...

    Good afternoon, I have a question. I was just told by my supervisor that I cannot speak Spanish to my coworkers in our department. She states that some other non-Spanish speaking workers claim it ...

  9. 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.