Io ho una adsl 640 ADD e il ping e' molto basso per essere in modalita' interleaved, sono a circa due kilometri di cavo aereo dalla centrale

il ping su 192.168.100.1 (gateway in centrale) mi da 21/22 ms costanti
il ping su maya.ngi mi da' 25/26 ms costanti

eppure i miei due routers ADSL me la segnalano entrambi come interleaved 800/320.

Line State Connected
Modulation ADSL_G.dmt
Annex Mode ANNEX_A
Max Tx Power -38 dBm/Hz

Item Downstream Upstream Unit
SNR Margin 31 31 dB
Line Attenuation 13 6 dB
Data Rate 800 320 kbps

in un passaggio maya.ngi.it mi ha datto addirittura 15 ms

#2 maya.ngi.it (88.149.128.3): Echo Reply, ttl=55, 15 ms

Ping - Saturday, April 14, 2007 20:11:09
Generated by CyberKit Version 2.5
Copyright © 1996-2000 by Luc Neijens

Address: maya.ngi.it
Number of Packets: 3
Packet size: 64
Timeout: 15
Delay: 1000
Resolve Addresses: Yes
Don't Fragment: No

#1 maya.ngi.it (88.149.128.3): Echo Reply, ttl=55, 16 ms
#2 maya.ngi.it (88.149.128.3): Echo Reply, ttl=55, 16 ms
#3 maya.ngi.it (88.149.128.3): Echo Reply, ttl=55, 32 ms

Statistics: Out 3, in 3, loss 0%, times (min/avg/max) 16/21/32 ms