Methods
Depending on implementation, OTA software delivery can be initiated upon action, such as a call to the provider's customer support system or other dialable service, or can be performed automatically. Typically it is done via the former method to avoid service disruption at an inconvenient time, but this requires subscribers to manually call the provider. Often, a carrier will send a broadcast SMS text message to all subscribers (or those using a particular model of phone) asking them to dial a service number to receive a software update.
Verizon Wireless in the U.S. provides a number of OTA functions to its subscribers via the *228 service code. Option 1 updates phone configuration, option 2 updates the PRL. Similarly Voitel Wireless that uses Verizon network uses *22890 service code to program Verizon based Voitel wireless phones. Interop Technologies provides a number of nationwide wireless operators in the US with an SS7 Based Over-the-Air device management solution. This solution allows operators to manage wireless device functionality including renumbering handsets, updating phone settings, applications and subscriber data and adjusting PRL to manage cost structures.
To provision parameters in a mobile device OTA, the device needs to have a provisioning client capable of receiving, processing and setting the parameters. For example, a Device Management client in a device may be capable of receiving and provisioning applications, or connectivity parameters.
In general, the term OTA implies the use of wireless mechanisms to send provisioning data or update packages for firmware or software updates to a mobile device — this is so that the user does not have to go to a store or a service center to have applications provisioned, parameters changed or firmware or software updated. Non-OTA options for a user are a) to go to a store and seek help b) use a PC and a cable to connect to the device and change settings on a device, add software to device, etc.
Read more about this topic: Over-the-air Programming
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