ZyXEL
From Indie IT Wiki
Information
http://support.aa.net.uk/Router_-_ZyXEL_P660R-D1
Manual
http://zyxel-manuals.org/zyxel-p-660r-d1-d3-user-guide/106/
SIP ALG
Enable
sys general load ip nat service sip active 1 sys general save
Disable
sys general load ip nat service sip active 0 sys general save
Latency Speed Tweaks Dropped Connections
http://www.dslreports.com/forum/r18812707-Speed-Problem-Zyxel-P660R-ELNK-Latency-and-Slow
http://www.dslreports.com/forum/r20996563-Line-drops-Error-accesing-P660R-61-web-configuration