Что означает icc id в модеме
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Что означает icc id в модеме

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ICCID

Stands for «Integrated Circuit Card Identifier.» An ICCID is a unique number assigned to a SIM card used in a mobile phone or another cellular device. It provides a standard way to identify each mobile device connected to a cellular network.

ICCID Format

An ICCID is 19 or 20 digits long and contains individual sections of numbers, including a header, ID number, and check digit, calculated using a checksum. The header is 6 or 7 digits long and includes the following information:

  1. Major industry identifier (MMI) — the first two digits — always 89 for SIM cards
  2. Country code (CC) — one to three digits — represents USA, England, Japan, etc.
  3. Issuer Identifier Number (IIN) — two to three digits — represents Verizon, AT&T, T-Mobile, etc.

ICCID vs IMEI

Both the ICCID and IMEI (International Mobile Equipment Identity) are unique IDs for mobile devices. However, the IMEI is attached to the hardware while the ICCID is assigned to a removable SIM card. Therefore a smartphone will always have the same IMEI, but the ICCID will change if the SIM card is replaced.

Cellular providers activate devices based on their ICCID rather than their IMEI. Since each mobile account is linked to an ICCID, it is possible to use the same device on multiple networks by merely swapping out the SIM card.

SIM: IMSI и ICCID

Многие знают, что на SIM-карте хранится некий идентификатор абонента, называемый IMSI. И что у каждого абонента IMSI свой, уникальный. В то же время, если вытащить SIM-карту из телефона, то на ней можно увидеть другой номер, лишь частично совпадающий с IMSI. Что это за номера, чем они отличаются, и почему в них есть общие подстроки цифр?

Начнём с кусочка пластика со встроенным микропроцессором под названием “SIM-карта”. Она является частным представителем более обширного класса микропроцессорных устройств, называемых “смарт-карты”. В соответствии с международным стандартом ISO/IEC 7812 каждой такой карте присваивается уникальный номер, называемый Integrated Circuit Card ID (ICCID):

Как видно, этот номер, состоящий из 19 цифр (хотя встречаются и очень старые карты с 20-разрядными ICC ID), в свою очередь может быть разбит на отдельные компоненты. Первые две цифры — код индустрии, который для телекома всегда равен 89. Дальше идет код страны длиной от одного до трех знаков, и код организации, выпустившей карту. Этот префикс длиной в 7 цифр называется Issuer Identification Number (IIN). В приведенном примере код страны — 380 (Украина), код выпустившей организации — 01 (ЗАО “УМС”).

Остаток ICCID составляет индивидуальный номер карты (уникальный в рамках данного IIN), за которым следует одна цифра, используемая для контроля правильности IIN по простому алгоритму. Индивидуальный номер карты может назначаться выпускающей организацией по собственному усмотрению.

Теперь перейдем к IMSI.

Каждая карта содержит набор данных, имеющих отношение к определённому обслуживаемому “мобильному устройству” (mobile station, MS. Под этим словосочетанием, упрощённо говоря, понимают набор “человек+мобилка+SIM-ка”). У этого набора данных (и, следовательно, у мобильного устройства) есть свой уникальный ID. Он и называется IMSI — International Mobile Station Identity.

Обычно SIM-карта содержит данные об одной MS. Но в принципе (например, в случае программируемых SIM-карт) никто не мешает размещать на одной SIM-карте сразу несколько наборов данных, идентифицируемых несколькими разными IMSI.

Что же такое IMSI?

Это 15-значное число, которое (surprise!) можно разделить на отдельные компоненты. Первый — это код страны в рамках инфраструктуры GSM, называемый Mobile Country Code (MCC). Второй — это код мобильной сети в рамках страны, Mobile Network Code (MNC). Дальше идут 10 знаков, которые, собственно, и являются идентификатором MS (абонента) в рамках сети. В приведеном примере MCC = 255 (Украина), MNC = 01 (ЗАО “УМС”).

К чему это приводит на практике?

Во-первых, если у оператора дела идут хорошо, и он наподключал больше 10 10 -1 абонентов, ему надо получать новый MNC в стандартизирующих органах 😉

Во-вторых, чтобы все работало и телефоны звонили, оператору необходимо в рамках своей сети всегда иметь возможность определить, в каком HLR-е содержатся сведения об абонентах. Тут сама собой напрашивается очевидная оптимизация — трактовать несколько первых цифр идентификатора MS как указание на то, в каком HLR-е содержаться сведения об этом абоненте. При этом маршрутизация запросов к HLR-ам описывается простыми правилами вида: “все запросы о абонентах 2550198* направлять в HLR #98”.

Теперь представим себе весь процесс выпуска новых карт и привлечения новых абонентов. Оператор решил выпустить новые карты. Он отправляет заказ производителям SIM-карт. Производители присылают контейнеры с физическими SIM-картами (куда уже прописаны IMSI) и стопицот раз зашифрованные секретные данные о них (пресловутые Ki-коды и тому-подобное). Секретные данные загружаются в секретные информационные системы оператора, а SIM-карты направляются в магазины, дилерам и т.п.

Понятное дело, что в тот момент, когда свежеподключившийся абонент вставит SIM-карту в телефон, она уже должна быть правильным образом “прописана” в HLR-е (иначе абонент не сможет зарегистрироваться в сети). Получается, что данные о всех новых SIM-картах надо сразу размещать в HLR-ах. А если SIM-карты не продадутся в течении длительного времени? Тогда данные о них будут занимать ценное место в базе HLR. Можно выбрасывать карты в продажу порциями, или вообще при фактической продаже SIM-карты абоненту нажимать кнопочку в каком-то интерфейсе, и on demand загружать в HLR данные о картах поштучно.

Для того, чтобы заниматься подобными оптимизациями, полезно знать, какому ICCID (который можно прочесть на коробке с SIM-кой) соответствует какое IMSI. Понятное дело, что для информационных систем это дело не хитрое — заводится табличка (ICCID, IMSI), и дело с концом. А вот для людей проще, чтобы ICCID и IMSI были похожими. Именно поэтому обычно при заказе SIM-карт оператор просит, чтобы у них совпадали, к примеру, последние 10 цифр IMSI и Individual ID в ICCID.

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ICCID (Serial) Number of a SIM Card: Definition, Functions, and More

ICCID on SIM Card

SIM cards are integral to telecommunication as is evident by the number of SIM cards currently active on the globe. However, they are equally important in IoT devices that need an internet connection to function. Hence, there is a need to differentiate these SIM cards and since IoT devices can’t make phone calls, the only respite a user has is the SSN or the SIM Serial Number. But what is a SIM Serial Number, where can one find it? Or how to recognize this number? The following article has all these answers and more.

Table of Contents

What is ICCID?

ICCID stands for Integrated Circuit Card Identifier, and every SIM card has a unique one. It consists of a set of 18 to 22 numeric characters that should not be confused with the IMEI number. An IMEI is a unique identification number of your mobile device, while this one is a unique identification number of your SIM card. Most consumers never care about the SIM card’s ICCID number, as it is rarely useful for them unless there is a technical error.

In case of technical issues, the technician or your service provider takes help from the ICCID number. That’s why most users don’t even pay attention to this number. In fact, for them, it’s just a series irrelevant of numbers. But no information on your SIM card is useless. The ICCID number also has its uses. In the following sections, you will learn about it in great detail.

Where can I find the ICCID number?

As we have previously established the importance of the ICCID, it is time to explain where one can find it. There are several ways to find an ICCID, such as:

1. Using AT Commands

If you are using the SIM in an IoT device or application, then you can access your ICCID from the system using AT commands. Although every service provider has a different command, there are still a few universal commands that should work across different devices.

2. On your SIM card packaging

However, you don’t have to go through all that hassle if you still have your original SIM card packaging, as it has the ICCID printed on it. Then there is the SIM tray, which also carries the ICCID. And some manufacturers even print it on the plastic body of the SIM.

3. Via your smartphones

Finally, you can always use your mobile device to look up the ICCID. All you have to do is go to your device’s settings and click on the About section. After that, tap on Status and click SIM Status. Here you will find the SSN or the ICCID.

In short

The 18 to 22-digit ICCID number is mostly printed on your SIM card, no matter what company it belongs to. You may also find it printed on the package/kit that you snap your SIM card out of. All the SIM card packets have this number printed on them too, along with the bar code and MSISDN number (your phone number). If you don’t want to bother to look at the ICCID number on the SIM card or its packet, then you may also find it in the Settings menu of your device in which the SIM card is inserted.

More about ICCID number

As already mentioned, an ICCID is a string of 18 to 22 characters. These numbers are divided into four sets. The first two digits are always 89 in every ICCID number. This is an industry code that signifies that this product belongs to the telecommunications industry. The next one to six digits belongs to the country code. These country codes are defined by the International Telecommunications Union. For example, if the SIM card belongs to the US or Canada, then the country code will be 1. If it belongs to India, the country code will be 91.

The next one to four digits after the country code belong to the mobile network code (MNC). This code is of the mobile operator to which the SIM belongs. For example, if the code is 004, it belongs to Verizon Wireless. In the same way, every telecom operator has its unique one to four digits code. The final set of remaining digits is unique to each SIM card. This marks the identity of your SIM card as entirely different from any other SIM card in the world. This allows you to view a specific SIM in the SIM manager, interact with your service provider’s customer support team, cancel or activate service on your SIM, and more.

How service providers use ICCID numbers

Once you enter your SIM card into the device to use cellular connectivity, the SIM card starts searching for cellular networks. After it detects available ones, it uses ICCID and IMSI number to know if the device has the right to access the cellular network it has detected. If all goes well, you can use the cellular services, otherwise, you can only call emergency numbers.

ICCID number is useful to identify your SIM among all the existing SIM cards. No SIM card comes without such a number, whether it is a physical SIM card or an embedded SIM. It is also important to understand the differences between distinct kinds of numbers associated with a SIM card like MSISDN, IMSI, ICCID, and so on. You can get more information about the uses of a SIM card to better understand the topic.

Is it different than a SSN?

SSN is SIN Serial Number, but it is also known by a different name, ICCID which stands for Integrated Circuit Card Identifier. It is a unique 19 to 20-digit number that offers a lot of information to the user. You can typically find an ICCID stamped on the SIM card’s plastic tray or the packaging.

What is the use of an ICCID?

Although many people disregard the serial number found on a SIM card, we have to tell you it’s untrue, as ICCID is crucial, especially for IoTs. When you are deploying an IoT application, you need to know the associated ICCID as it is the main identifier of your SIM. Hence, if you are using your IoT for telecommunication, if you want to manage your SIM via an online portal, if you want to reach out to your service provider to raise any queries, or even if you want to look up your network status, you will need the ICCID on hand.

Explaining the structure of an ICCID:

Now that we know the importance of an ICCID, we have to learn what secrets it is hiding. Jokes aside, the structure of an ICCID offers a lot of information when broken down. An ICCID is made up of 19 to 20 numbers and divided into 5 segments, all of which provide certain information. Here’s how the SSN is conscripted:

ICCID = MII + CC + IIN + IAIN + C

Thus, you can gain the following information from an ICCID:

Major Industry Identifier (MII)

The initial two digits of the ICCID are an identifier of the relevant industry, which is telecommunications for SIMs. Hence, you will always find 89 as the first two numbers on a SIM, which denotes its relevant industry use.

Country Code (CC)

The next 1 to 3 digits represent the country the SIM is meant for; thus, it shows the country code of the nation. Take the UK, for example. Its country code is 44, so the ICCID will be 20 digits, but if it is for Canada, then the code becomes 1 and the ICCID falls one digit short to 19. Incidentally, the country code can also be 3 digits long, like 354, which is the code for Ireland.

Issuer Identifier Number (IIN)

Then comes the IIN, or issuer Identifier Number, which represents the service provider of the SIM. Typically, IIN is made up of 2 digits, but in some cases, even 3 numbers are used.

Individual Account Identification Number (IAIN)

The rest of the numbers, except the Checksum, form the IAIN for the SIM. It is a unique modifier that represents the user in the service provider’s records. Furthermore, IAIN is also used to differentiate IoT SIMs from the rest, which makes it easier to activate and locate them remotely, anywhere on the planet.

Checksum (C)

Finally, we have Checksum, which makes up the last segment of an ICCID. It is a key that is used to validate SIM use. The Checksum is created using the other digits from the ICCID using the Luhn algorithm.

Dont confuse ICCID with the following:

Although ICCID is crucial and available on the SIM, there are still other pieces of information and numbers there. When looking for the ICCID, many people mistakenly believe these numbers to be the correct ones. Hence, we have included the other numbers you might find on the SIM card.

IMSI

IMSI is also a unique number present on a SIM card. It stands for International Mobile Subscriber Identity and is 15 digits long. IMSI is used to recognize the network carrier that provides a cellular network to the subscriber. Thus, it is used to register, identify, and track the subscriber of the mobile connection.

IMEI

Next comes the IMEI, or International Mobile Equipment Identity, which is used to uniquely identify the device on which the SIM is active. Every device has a unique code, and when you change SIMs, the relevant IMEI is stored on them to facilitate services accordingly. Why can’t a CDMA device function with a GSM SIM? Because the SIM and device have a conflict that is conveyed by the IMEI.

MSISDN

And finally, we have the MSISDN or the Mobile Station International Subscriber Directory Number. In layman term, it is your phone number.

Understanding ICCID: The Integrated Circuit Card Identifier is explained

The Integrated Circuit Card Identifier (ICCID) is a unique identification number assigned to each SIM card. It is used by mobile network operators to identify and authenticate users on their networks. The ICCID consists of a 19-character string that provides valuable information about the SIM card and the associated mobile operator. In this article we will examine the specifics of the ICCID and its importance in the world of mobile telecommunications.

Unraveling the secrets of ICCID

ICCID plays a crucial role in ensuring the proper functioning and security of SIM cards. Let us take a closer look at the various aspects of ICCID and its structure.

ICCID, short for Integrated Circuit Card Identifier, is a unique number assigned to each SIM card. It is used by mobile network operators to identify and authenticate users on their networks. The ICCID is stored in the SIM card’s integrated circuit and is transmitted to the network when the SIM card is inserted into a mobile device.

Understanding the format of ICCID numbers

ICCID numbers have a specific structure that allows for easy interpretation. The first part of the number, usually the first two digits, represents the issuing country or region code. This code is assigned by the International Organization for Standardization (ISO). For example, the code “89” represents Japan, while “44” represents the United Kingdom.

The next two digits represent the code of the issuing network operator. This code is used to distinguish between different mobile network operators within a country or region. It helps identify the company responsible for providing network services to the user. For example, the code “01” represents NTT DoCoMo in Japan, while “02” represents Vodafone in the United Kingdom.

The remaining digits contain important information such as the subscriber identification number, SIM card type and checksum. These numbers are used to identify the respective SIM card and fulfill various network-related functions. The subscriber identification number is used to uniquely identify the user account in the network operator’s system. The SIM card type indicates the technology and capabilities of the SIM card, e.g. B. whether it supports 3G, 4G or 5G networks. The checksum digit is used for error detection to ensure the accuracy of the ICCID.

ICCID vs. IMEI: What’s the difference?

While the ICCID identifies the SIM card, the International Mobile Equipment Identity (IMEI) is a unique number assigned to the mobile devices. IMEI acts as a device’s fingerprint and allows network operators to identify and track individual devices on their networks. It is usually printed on the back of the device or can be viewed in the device’s settings.

Although both ICCID and IMEI are important for the operation of mobile networks, they serve different purposes. The ICCID is specific to the SIM card and helps network operators authenticate users, while the IMEI refers to the device itself and helps with device tracking and identification. Network operators can use IMEI to block stolen or lost devices from accessing their networks, providing an additional layer of security.

In summary, the ICCID is an essential part of SIM card functionality and security. Its structured format allows for easy interpretation and identification of SIM cards, while IMEI serves as a unique identifier for mobile devices. Understanding the differences between ICCID and IMEI helps us understand the complicated systems that enable mobile networks to operate smoothly.

Put your knowledge to the test: ICCID quiz

Now that you have learned more about ICCID, you can put your knowledge to the test. Take this quiz to check your understanding of ICCID and related concepts.

    What does ICCID mean?

ICCID stands for Integrated Circuit Card Identifier. It is a unique identification number assigned to SIM cards in mobile devices.

An ICCID usually consists of 19 to 20 digits. These digits are divided into three parts: the Issuer Identification Number (IIN), the Individual Account Identification Number (IAIN), and the check digit.

The Issuing Network Operator Code, also known as Mobile Network Code (MNC), provides information about the mobile operator that issued the SIM card. It helps to identify the network to which the SIM card belongs.

While ICCID and IMEI are both unique identifiers used in mobile devices, they serve different purposes. The ICCID is specific to the SIM card and is used to identify it, while the IMEI (International Mobile Equipment Identity) is used to identify the device itself. IMEI is typically used to track stolen or lost devices, while ICCID is used to manage and activate SIM cards.

The Tech Factor: How ICCID Affects Your Device

ICCID not only helps network operators identify and authenticate users, but also affects the functionality of your mobile device. Let’s look at how ICCID affects your device.

First, the ICCID is stored on the SIM card and is required for the device to establish and maintain a connection to the cellular network. It is used by the device to authenticate itself to the network during the registration process.

But what exactly is the ICCID? Well, ICCID stands for Integrated Circuit Card Identifier. It is a unique 19-digit number assigned to each SIM card. This number is made up of different components, each serving a specific purpose.

The first part of the ICCID, called the Issuer Identification Number (IIN), identifies the country or region in which the SIM card was issued. This allows network operators to determine which network the device should be connected to when it is turned on.

The second part of the ICCID, called the “Individual Account Identification” (IAI), identifies the specific network operator that issued the SIM card. This ensures that the device is connected to the correct network and can access the appropriate services.

In addition, the last part of the ICCID, called the “check digit,” is used to verify the authenticity of the ICCID. It is calculated using a special algorithm that ensures the integrity of the number and helps prevent fraudulent activities.

Now let’s take a closer look at how the ICCID affects the functionality of your mobile device. As previously mentioned, the ICCID is crucial for the device to be able to establish and maintain a connection to the cellular network. Without a valid ICCID, your device cannot make calls, send text messages, or access the Internet.

The ICCID also plays an important role in accurately billing the services you use with your device. It helps track and assign various services and fees to the right SIM card and user account. This ensures that you are billed correctly for calls, messages and data used.

In addition, the ICCID allows network operators to remotely manage and update SIM card settings and configurations. This means they can push software updates, network settings and security patches to your device without requiring any physical intervention.

In addition, the ICCID is also used when unlocking devices. If you change network operators or want to use your device with a different SIM card, the ICCID is required to authenticate the device and ensure that it is compatible with the new network.

In summary, ICCID is not just a random number on your SIM card. It plays a crucial role in the functionality of your mobile device. From establishing network connections to accurate billing and remote management, ICCID is an essential component that ensures a seamless and secure user experience.

Exploring related terms in the world of ICCID

As we delve deeper into the world of ICCID, it is important that we become familiar with related terms and concepts.

Visualizing ICCID: A collection of images

For a visual representation of ICCID numbers and their structure, see this collection of images. These images provide a clear picture of how ICCID is organized and what each digit represents.

Understanding ICCID will give you insight into the world of SIM cards and how they work on mobile networks. From the structure of ICCID numbers to their impact on device functionality, ICCID plays an important role in ensuring seamless connectivity and secure communication on your mobile device.

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