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Prepaid USA Phone Cards US Sim Card Accessible To Buy In The UK
Posted on July 14, 2011 by Clyde Thorburn
One more technical definition that owners of US sim phone cards bought from HolidayPhone should know about is the Operator-Specific Emergency Number. The Operator-Specific Emergency Number is explained by Wikipedia as, quote “Many countries public telephone networks have a single emergency telephone number, sometimes known as the universal emergency telephone number or occasionally the emergency services number, which allows a caller to contact local emergency services for assistance. The emergency telephone number may differ from country to country. It is typically a three-digit number so that it can be easily remembered and dialled quickly. Some countries have a different emergency number for each of the different emergency services.
Individuals who have purchased a prepaid USA sim card from holidayphone will be intrigued to discover that Wikipedia’s explanation of the Operator-Specific Emergency Number continues on to explain that, quote “These emergency numbers often differ only by the last digit. Inside the European Union, 112 was introduced as a common emergency call number during the nineteen nineties, and is a well known emergency number in the world today alongside 911 and 999” end quote. The prepaid sim card or straight sim card also stores other carrier-specific data such as the SMSC (Short Message Service Center) number, Service Provider Name (SPN), Service Dialling Numbers (SDN), Advice-Of-Charge parameters and Value Added Service (VAS) applications.
A Short Message Service Center (SMSC) according to Wikipedia is, quote “A Short Message Service Center (SMSC) is a network element in the mobile telephone network which delivers SMS messages. When a user sends a text message (SMS message) to another user, the message gets stored in the SMSC (short message service center) which delivers it to the destination user when they are available. This is a store and forward option. An SMS center (SMSC) is responsible for handling the SMS operations of a wireless network. When an SMS message is sent from a mobile phone, it will reach an SMS center first. The SMS center then forwards the SMS message towards the destination. The main duty of an SMSC is to route SMS messages and regulate the process. If the recipient is unavailable, when the mobile phone is switched off, the SMSC will store the SMS message. It will forward the SMS message when the recipient is available” end quote.
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