4.4 Prepaid SIM Card Credit Recharge

As already mentioned in the Add SIM Group section, credit can be recharged in variable ways. Below are details on each credit recharging method.

USSD

To recharge via USSD you have to know the USSD code (may vary depending on the network provider) and the prepaid voucher code. Suppose that the USSD recharge code is *102*recharge_code# and the recharge voucher code entered in 2N® SIM Star Server is assigned to the SIM card. To recharge the SIM card credit using the USSD method, take the following steps:

  1. Set the Type parameter to USSD in the Prepaid SIM card recharge settings section of the SIM Groups menu for the given SIM group.
  2. In the same section, enter *102%c#* in the String parameter, where %c represents the assigned recharge voucher code to be added by 2N® SIM Star Server and # signals the end of command.
  3. The recharging process starts by logging in the SIM card to the GSM module (unless already logged in) and dialling the USSD code in the format: *102*recharge_code#. The rest of the process takes place automatically in the provider's network. 

SMS

To recharge via an SMS you have to know the SMS format and destination number as well as the prepaid recharge voucher code. Suppose that the recharging SMS format is RECHARGE_voucher_code, the phone number is 606 352 125 and the voucher code entered in 2N® SIM Star Server is assigned to the SIM card. To recharge the SIM card credit via an SMS, take the following steps:

  1. Set the Type parameter to SMS in the Prepaid SIM card recharge settings section of the SIM Groups menu for the given SIM group.
  2. In the same section, enter the phone number to which the SMS shall be sent into the Number parameter. It is 606 352 125 in our example.
  3. Enter RECHARGE_%c in the String parameter, where %c represents the assigned recharge voucher code to be added by 2N® SIM Star Server.
  4. The recharging process starts by logging in the SIM card to the GSM module (unless already logged in) and sending an SMS in the format RECHARGE_voucher_code to phone number 606 352 125. The rest of the process takes place automatically in the provider's network. 

IVR

To recharge via an IVR you have to know the recharge line number and the provider's IVR tree structure as well as the prepaid recharge voucher code. Suppose that the recharging IVR line number is 606 456 789 and a recharge code has to be entered for a successful IVR tree passage. Thus, dial 1, 3 and 2 sequentially. The recharge voucher code entered in 2N® SIM Star Server is assigned to the SIM card. To recharge the SIM card credit via the IVR, take the following steps:

  1. Set the Type parameter to IVR in the Prepaid SIM card recharge settings section of the SIM Groups menu for the given SIM group.
  2. In the same section, enter the provider's credit recharging IVR line number into the Number parameter. It is 606 456 789 in our example.
  3. Enter p1p3P2W%c#WW# in the String parameter, where %c represents the assigned recharge voucher code to be added by 2N® SIM Star Server and p, P and W represent the waiting time of one, two or ten seconds.
  4. The recharging process starts by logging in the SIM card login to the GSM module (unless already logged in) and dialling the number included in the Number parameter. On the provider's side, the DISA service answers the call and digit 1 is DTMF-dialled into the IVR tree after a 1-second timeout (corresponds to p1). Digit 3 (corresponds to p3) is dialled after another 1-second timeout and digit 2 (corresponds to P2) is dialled after another two seconds. The IVR is playing a message and no DTMF detector is connected. Therefore, wait about 10 seconds until the message is completed (corresponds to W) and DTMF-dial the recharge code that has been assigned by 2N® SIM Star Server (corresponds to %c). The # char terminates the recharge code entering sequence. Finally, a 20-second long waiting for the recharge code playing (corresponds to WW), dialling confirmation with # and call end take place. 

CALL

To recharge via an call you have to know the recharge called number. 

Note

  • The credit recharging IVR tree structure depends on the network provider. You are recommended to recharge manually first and, according to the system structure and responses, set the above mentioned 2N® SIM Star Server parameters.