what is the 'general bytes' that Nokia 701 sends along with ATR_REQ command during protocol activation?

I see that I always get the below 13 bytes.

InGeneralBytesLength : 0x0d
InGeneralBytes (hex): 46 66 6D 01 01 10 02 02 03 80 04 01 32

I verified that it is not IMEI code of the phone. My setup is as follows,

- I have an NXP PN512 board running as NFC target.
- I enable NFC in Nokia 701 and show it near NXP PN512. 701 is becoming initiator and sends ATR_REQ with the above 'general bytes'.

Any information on this is greatly appreciated.