> 23. | Appendix

> 23.1 | Restricted access to SIM data after SIM PIN authentication

> Users should be aware that when using a phonebook, SMS or Remote SAT command quickly after SIM PIN authentication the SIM data may not yet be accessible, resulting in a short delay before the requested AT command response is returned. This delay is due to the initial process of loading SIM data once after SIM PIN authentication. The duration of loading SIM data is dependent on the SIM card used and may take a couple of seconds.
> The "^SSIM READY" URC enabled with AT^SSET can be used to notify the user when the ME has finished reading the SIM card and SIM data are accessible after SIM PIN authentication. Of course, all phonebook and SMS commands may be issued before the URC is delivered. In this case the AT command response (for example the complete phonebook) will appear after the delay mentioned above, but before the "^SSIM READY" URC is displayed. See example below.
> In addition to or as an alternative to the "^SSIM READY" URC you can activate the "SIND: simstatus" URC provided by AT^SIND.
> After the "+CREG: 1" (or "+CREG: 5") URC and before the "^SSIM READY" URC it is not sure that outgoing and incoming calls can be made and short message functions executed. Emergency calls are possible. Outgoing and incoming calls are always possible AFTER having received the "+CREG: 1" (or "+CREG: 5") and "^SSIM READY" URCs. See also Section 8.5, Network registration.
> If SIM cards with EFOPL and EFPNN fields are inserted, it is possible that the initial process of reading EONS data causes an additional delay of 2 seconds (without Remote SIM Access) or approx. 10 seconds (if Remote SIM Access is activated) before the SIM is fully accessible. Therefore, trying to access the SIM during this time may cause the CME Error 14 or CMS Error 315 ("SIM busy") to occur even though the "^SSIM READY" URC was already output. For details please see the note appended to AT^SIND, "eons" indicator.
> Example:

> AT^SSET=1 | Activate the "^SSIM READY" URC.
> OK
> AT&W | Store the presentation mode of the "^SSIM READY" URC to the user profile.
> OK
> AT+CFUN=1,1 | Restart the ME.
> OK
> ^SYSSTART | The ME was restarted.
> AT+CPIN | Enter the SIM PIN.
> OK
> AT+CPBW=50,"+4030123456789",145,"Paul" | Write a new phonebook record.
> OK
> ^SSIM READY | The URC now confirms that the ME has finished reading data from the SIM.
> AT+CPBR=50,50 | Read the phonebook entered before.
> +CPBR: 50,"+4030123456789",145,"Paul" | The phonebook entry was properly saved.