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The value shall start at 1 and increment for every short message which makes up the concatenated short message. If the value is zero or greater than the value in Field 5 then the receiving entity shall ignore the whole information element. [ETSI Specification: GSM 03.40 Version 5.3.0: July 1996] Example of the UDH for an sms split into two parts:
USSD (Unstructured Supplementary Service Data) codes [1] are mobile dial codes that can be used for communicating with the service provider's computers (i.e. for WAP browsing, prepaid callback service, mobile-money services, location-based content services, menu-based information services, and as part of configuring the phone on the network).
Short codes, or short numbers, are short digit-sequences—significantly shorter than telephone numbers—that are used to address messages in the Multimedia Messaging System (MMS) and short message service (SMS) systems of mobile network operators. [1] In addition to messaging, they may be used in abbreviated dialing.
Subsequently, one or more mobile terminated SMS messages communicate the status and/or results of the initial request. [5] In such cases, SMS is used to "push" a reply or updates to the handset when the network is ready to send them. [6] In contrast, USSD is used for command-and-control only.
Voice short codes enable businesses to provide greater transparency on call rates, as the rate is fixed irrespective of which network is being used to make the call. Voice short codes are available across all the UK mobile network operators - namely Vodafone , 3 , EE , Virgin Mobile and O2 .
Call flow for the mobile terminated Short Message Service. The figure to the right depicts a call flow for mobile-terminated Short Message delivery. [1] For the sake of simplicity, some of the interactions between the VMSC and VLR, and VMSC and Handset, have been omitted, and only the case when SMS home routing is not in use is shown.
A security key is a physical device that gets uniquely associated with your AOL account after you enable it. Each time you sign in with your password, you'll be prompted to approve access to your account using your key. This prevents anyone who doesn't have your security key device from gaining access to your account.
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.