typedef enum {
  VM_GSM_SMS_BOX_INBOX = 0x01,
  VM_GSM_SMS_BOX_OUTBOX = 0x02,
  VM_GSM_SMS_BOX_DRAFTS = 0x04,
  VM_GSM_SMS_BOX_UNSENT = 0x08,
  VM_GSM_SMS_BOX_SIM = 0x10,
  VM_GSM_SMS_BOX_ARCHIVE = 0x20,
  VM_GSM_SMS_BOX_RESERVED = 0x40
} VM_GSM_SMS_BOX;