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  2. List of international call prefixes - Wikipedia

    en.wikipedia.org/wiki/List_of_international_call...

    This is a list of international dialing prefixes used in various countries for direct dialing of international telephone calls.These prefixes are typically required only when dialling from a landline, while in GSM-compliant mobile phone (cell phone) systems, the symbol + before the country code may be used irrespective of where the telephone is used at that moment; the network operator ...

  3. Long-distance calling - Wikipedia

    en.wikipedia.org/wiki/Long-distance_calling

    Interstate long-distance or inter-LATA interstate long-distance, the most common group, is the one for which long-distance carriers are usually chosen by telephone customers. Another form of long-distance call, increasingly relevant to more U.S. states, is known as an inter-LATA intrastate long-distance call. This refers to a calling area ...

  4. International telecommunications routes - Wikipedia

    en.wikipedia.org/wiki/International...

    At the other end of the quality spectrum is a route using VoIP over the long-distance satellite link terminating in an ISP using a leaky PBX to terminate the calls. VoIP packets contain a lot of signaling overhead: to carry the 64k of data packet a conventional telecoms network transmits needs around 100k of bandwidth with VoIP.

  5. International call - Wikipedia

    en.wikipedia.org/wiki/International_call

    These popular telecommunications products allow users to initiate an international call from almost anywhere in the world. These cards typically offer rates lower than most traditional long-distance products and services, and can be used via landline, cellular phone, PBX, and some VoIP services, as well as from some airports and hotels.

  6. List of mobile telephone prefixes by country - Wikipedia

    en.wikipedia.org/wiki/List_of_mobile_telephone...

    15 before the local number but after long distance area code for national calls (0 11 15 xxxx-xxxx) and 9 placed after the international access code excluding the 15 for international calls (+54 9 11 xxxx-xxxx). Armenia +374: 55: 8: Ucom: 95: 41: 44 77: VivaCell-MTS: 93: 94: 98: 91: Beeline Armenia

  7. Telephone numbering plan - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbering_plan

    The E.164 standard of the International Telecommunication Union is an international numbering plan and establishes a country calling code (country code) for each member organization. Country codes are prefixes to national telephone numbers that denote call routing to the network of a subordinate number plan administration, typically a country ...

  8. IDT Corporation - Wikipedia

    en.wikipedia.org/wiki/IDT_Corporation

    He founded the company after opening a sales office in Israel, receiving large international phone bills and then discovering a way to lower them by re-originating calls in the United States. [ 2 ] In 1996, IDT founded Net2Phone , the world's fourth-largest VoIP provider (2017), [ 6 ] and sold 32% of Net2Phone in August 2000 to AT&T for $1.1 ...

  9. International gateway - Wikipedia

    en.wikipedia.org/wiki/International_gateway

    An International Gateway is a telephone number through which calls are routed to get cheaper rates on international long distance charges, or to make calls through voice over IP networks internationally. They also are effective in making an international call into the US appear as if it is originating from a local number rather than the real ...