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A circuit ID is a company-specific identifier assigned to a data or voice network connection between two locations. This connection, often called a circuit, may then be leased to a customer referring to that ID. In this way, the circuit ID is similar to a serial number on any product sold from a retailer to a customer.
Local exchange carrier (LEC) is a regulatory term in telecommunications for the local telephone company.. In the United States, wireline telephone companies are divided into two large categories: long-distance (interexchange carrier, or IXCs) and local (local exchange carrier, or LECs).
The ISDN Services User Part Circuit Identification Code (CIC) is part of the Signaling System #7 which is used to set up telephone calls in Public Switched Telephone Networks [1] as part of the Initial Address Message (IAM).
The Circuit Identification Code is used to specify which trunk between two switches is used to carry a particular call. Note that some versions of ANSI ISUP permit a CIC with 14 significant bits instead of the 12 that are shown. [8] The Message Type indicates the ISUP message type. The presence and form of the remaining 3 components are ...
Louisiana; spectrum sold to AT&T in 2014; [89] [75] [165] MNC withdrawn [14] 310: 880: DTC Wireless: Advantage Cellular Systems, Inc. Operational: LTE: Tennessee; owned by DeKalb Telephone Cooperative; [89] [75] fixed wireless only, GSM 850 discontinued January 2017 [166] 310: 890: Verizon Wireless: Unknown: GSM 850 / GSM 1900: Former Unicel ...
The database relating ANIs to addresses is known as ALI (Automatic Location Identification). The router then uses the address to search in the MSAG for the Emergency Service Number (ESN) of the appropriate PSAP for that area and connects the call to it.
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Where vv is the virtual circuit ID Note 1: The first parameter byte of the EOF primitive can have one of four different values (8A, 95, AA, or B5). This is done so that the EOF primitive can rebalance the disparity of the whole frame.