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Peru uses 2-digit area codes followed by 6-digit subscriber numbers outside of Lima. In Lima the area code is "1" and the subscriber number has seven digits, divided XXX XXXX. The "trunk 0" is often used, especially for numbers outside Lima. For example, a phone number in Arequipa might be written (054) XX-XXXX.
Automatic number announcement systems are based on automatic number identification. They are intended for use by phone company technicians, the ANAC system bypasses customer features, such as unlisted numbers, caller ID blocking, and outgoing call blocking. Installers of multi-line business services where outgoing calls from all lines display ...
Such numbering plans are called 2L-4N, or simply 2–4, for example, as shown in the photo of a telephone dial of 1939 (right). In this example, LAkewood 2697 indicates that a subscriber dialed the letters L and A, then the digits 2, 6, 9, and 7 to reach this telephone in Lakewood, NJ (USA). The leading letters were typically bolded in print.
The scheme relied on the second digit of an area code being 0–1 and the second digit of a local exchange being 2–9. This dialing plan was incompatible with the introduction of area code 334 and area code 360 , and was therefore eliminated by January 1, 1995, in the United States, and by September 1994 in Canada.
Microsoft canonical address format for telephone numbers [2] [3] derives from E.123 international notation by allowing explicit indication of area code with parentheses. The canonical format is used by the Telephony API (TAPI), a Windows programming interface for dial-up fax, modem, and telephone equipment.
For example, the telephone number +1 999 555 0123 translates to the domain name 3.2.1.0.5.5.5.9.9.9.1.e164.arpa. When a number is mapped, a DNS query may be used to locate the service facilities on the Internet that accept and process telephone calls to the owner of record of the number, using, for example, the Session Initiation Protocol (SIP ...
Professionalism is a set of standards that an individual is expected to adhere to in a workplace, usually in order to appear serious, uniform, or respectful. What constitutes professionalism is hotly debated and varies from workplace to workplace and between cultures .
Panel Call Indicator, or PCI, is a form of signalling used between two telephone offices.It was also originally called Relay Call Indicator (RCI). Originally designed along with the panel type telephone office, PCI was intended to allow subscribers in fully automated exchanges to dial numbers in manual offices the same way they dialed numbers in their own exchange.