name: OI
full_form: Operator Identifier (part of the APN)
context: These fields contain the actual connected Access Point Name Network/Operator Identifier determined either by MS, SGSN or modified by CAMEL service. An APN can also be a wildcard, in which case the SGSN selects the access point address. Following TS 23.003 [7], the APN field is specified in the CDR by two variable strings. The first is the APN Network Identifier (NI portion) and the second is the APN Operator Identifier (OI portion). The APN NI may contain one or more label as described in TS 23.003 [7]. The APN OI is composed of three labels. The first and second labels together shall uniquely identify the PLMN operator (e.g. "mnc<operator mnc>.mcc<operator mcc>.gprs"). To represent the APN NI and OI in the GPRS CDRs, the "dot" notation shall be used. See 3GPP TS 23.003 [7] and 3GPP TS 23.060 [2] for more information about APN format and access point decision rules.
description: The Operator Identifier (OI) is a part of the Access Point Name (APN) that uniquely identifies the Public Land Mobile Network (PLMN) operator. It consists of three labels, including the mobile network code (MNC) and mobile country code (MCC). The OI plays a crucial role in determining the access point address for GPRS connections.
explanation: The text describes the Operator Identifier (OI) as a component of the APN used to uniquely identify the PLMN operator. This function of identifying and differentiating network operators aligns with the definition of a parameter, which is a specific value or attribute that defines a system's behavior or configuration.
section_title: 5.1Access Point Name (APN) Network/Operator Identifier
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