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It is also possible on a per-call basis to suppress the use of the preferred CUG, i.e. act as if the user is not a member of the closed user group, and to suppress the outgoing access permission, i.e. to insist that the call only go through if the destination is a member of the CUG.
The HLR will send to the VLR a MAP PRN (Provide Roaming Number) message to obtain the MSRN of the roaming cell phone. Like that the HLR will be able to route the call to the correct MSC. With the IMSI contained in the MAP PRN message, the VLR assigns a temporary number known as the mobile station roaming number (MSRN) to the roaming cell phone.
The free-roaming zone enables its subscribers to roam free between these countries, thereby scrapping roaming charges, making telephone calls and sending SMS at their home tariff and receiving incoming phone calls and SMS for free. It also enables them to buy airtime with their own vouchers when travelling outside of their home country. [16]
• Type in your recipient's name, email address, or phone number. If that person is in your Contacts app, Messages finds them as you type. To start a group conversation, add more recipients.
USSD on a Sony Ericsson mobile phone (2005). Unstructured Supplementary Service Data (USSD), sometimes referred to as "quick codes" or "feature codes", is a communications protocol used by GSM cellular telephones to communicate with the mobile network operator's computers.
This service allows anyone wishing to send money to Kenya to visit a Safaricom IMT partner and send money to an M-PESA mobile phone in Kenya. The transaction is similar to a traditional cash-to-cash money transfer, except that the sender specifies the recipient's mobile phone number at the time the funds are sent.
The proliferation of retailers selling mobile airtime remittance services has increased in developing countries, partly due to the growth of various mobile payment solutions. It is easy for workers, friends, and family living or visiting oversea countries to send mobile airtime top-ups from the convenience of their home, mobile device, bank, or ...
Users can call within US and Canada, while texting is free in 35 countries. New accounts receive a new phone number and 60 free minutes. Users may t allows users to send and receive text messages directly from a computer. They provide a permanent number to their users, which they can use to send free texts for lifetime. [3]