Step 1. The customer makes a toll-free call that connects to an SSP (with the IVR feature). The prepaid service center validates the secret code (obtained from the scratch card) and the MSISDN of the prepaid customer. ... (With number portability, a customer can switch mobile service providers without changing the MSISDN.)anbsp;...
|Title||:||Charging for Mobile All-IP Telecommunications|
|Author||:||Yi-Bing Lin, Sok-Ian Sou|
|Publisher||:||John Wiley & Sons - 2008-09-15|