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Bell Mobility: Bell Mobility: Operational: UMTS 850 / UMTS 1900 / LTE 700 / LTE 1700 / LTE 1900 / LTE 2600 / 5G 1700 / 5G 3500: Used in IMSI to identify Bell subscribers on shared network 302–880; LTE bands 17, 29, 4, 2, 7 302: 620: ICE Wireless: ICE Wireless: Operational: UMTS 850 / GSM 1900 / LTE 850 / LTE 1900: Northern Canada 302: 630 ...
Thus, in the equation relating the Bell numbers to the Stirling numbers, each partition counted on the left hand side of the equation is counted in exactly one of the terms of the sum on the right hand side, the one for which k is the number of sets in the partition.
611 is an abbreviated dialing telephone number in the North American Numbering Plan, implemented by many telephone companies for reporting troubles with telephone service, or with a payphone. It is an N11 code , which are reserved from assignment as area codes or central office codes , for use in special services.
The system was based on fixed-length numbers; a direct-dial long-distance call consisted of a three-digit area code and a seven-digit local number. Numbers in 2L-4N cities (such as Montréal and Toronto ) were systematically lengthened to seven digits in the 1950s, a few exchanges at a time, so that all local numbers were seven digits when ...
The Type Allocation Code (TAC) is the initial eight-digit portion of the 15-digit IMEI and 16-digit IMEISV codes used to uniquely identify wireless devices.. The Type Allocation Code identifies a particular model (and often revision) of wireless telephone for use on a GSM, UMTS, LTE, 5G NR, iDEN, Iridium or other IMEI-employing wireless network.
The most prominent facility for telephone number mapping is the E.164 number to URI mapping (ENUM) standard. It uses special DNS record types to translate a telephone number into a Uniform Resource Identifier (URI) or IP address that can be used in Internet communications.
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The mobile identification number (MIN) is a number that is derived from the 10-digit directory telephone number assigned to a mobile station. The rules for deriving the MIN from the 10-digit telephone number are given in the IS-95 standard. MIN1 is the first or least significant 24 binary digits of the MIN.