I am looking for an AT command that can retrieve this information.
I already know that T-mobile (US) is 500, and AT&T(US) is 0000. There are also some incomplete lists on the web (wiki) for other global GSM carriers. Does an AT command exist that can determine this carrier/sim specific number?
I am using the GC-864 QUAD V2
This a service/facility at network operator (MNO) side, has nothing to do with AT commands, the service number isn’t made known to the mobile module or handset in any way. As you say the means to advertise the number are operator’s publications or third party lists.
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