ho fatto questo test....ho una 640...mi sapete dire cosa devo fare??

TCP options string = 0204059801010402
MTU = 1472
MTU is not fully optimized for broadband. Consider increasing your MTU to 1500 for better throughput. If you are using a router, it could be limiting your MTU regardless of Registry settings.
MSS = 1432
Maximum useful data in each packet = 1432, which equals MSS.

Default Receive Window (RWIN) = 8592
RWIN Scaling (RFC1323) = 0 bits
Unscaled Receive Window = 8592

RWIN is a multiple of MSS
Other values for RWIN that might work well with your current MTU/MSS:
504064 (MSS x 44 * scale factor of 8)
252032 (MSS x 44 * scale factor of 4)
126016 (MSS x 44 * scale factor of 2)
63008 (MSS x 44)
bandwidth * delay product (Note this is not a speed test):

Your RcvWindow limits you to: 343.68 kbps (42.96 KBytes/s) @ 200ms
Your RcvWindow limits you to: 137.472 kbps (17.184 KBytes/s) @ 500ms
Consider increasing your RWIN value to optimize TCP/IP for broadband.
MTU Discovery (RFC1191) = ON
Time to live left = 119 hops

TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000000 (0)

grazie, ciao