Zyxel P660HW-T1 on WBC ADSL2+

Anyone else running one of these on a 21CN ADSL2+ connection? Mine refuses to sync unless forced to G.DMT. Zyxel has got as far as saying it's the latest firmware, so should work. They're escalating it to Taiwan but I'm not confident I'll hear anything back anytime soon, if atall.

Not sure at the moment whether it's a problem with my router and needs RMAing, or time to find some other one as it's not compatible.

Let me know if you sort this issue, I have the same router but am yet to have my exchange upgraded. I want it to work when it does!

Thanks

Did you guys get any joy with your p660HW-t1 routers on ADSL2+ ?

I have that router and it seems like it doesn't want to play with ADSL2+ (it only shows ADSL2 -no plus) and insists on syncing at half the speed I was getting with ADSLmax.

If you indeed bought new gear what did you get?

all info welcome
cheers

I'm really disappointed with this router (ZyXEL P660HW-T1). I bought it as I've used ZyXEL routers at work (I'm a network admin) and home for years and always liked them.
I bought this to replace a ZyXEL P-660H-D1 (looks exactly the same except no wireless).

When downloading from newsgroups with the non-WiFi 660H-D1 I get a very good download consistent at about 1950Kbps (ADSL2+). Ping times to the inside interface of the router remain constant at 1ms and no problems administering the router.

Swapping the router660H for the 660HW (set up from factory default with simple default rules - e.g. no bandwidth management etc.) the 660HW only gets a consistent 1150Kbps - a difference of 800Kbps!! This difference is absolutely consistent too, I swapped them over many times to test.

Not only that, the ping times to the inside interface of the 660-HW start going wild under heavy download - in the hundreds of ms and occasionally timing out - trying to administer the router using a browser is like wading through treacle.

Disabling wireless made no difference and there were certainly no wireless leechers using the connection!

The first thing I did was update the firmware with the latest 660-HW FW (12/09?) from Zyxel's site, which made no difference.

I have to say I didn't notice whether it synced as ADSL2 rather than ADSL2+. It showed a download sync speed of 18xx Kbps in status. The ATM loopback test always fails, though I wasn't bothered about that as it also fails on my 660-H that performs fine.

I've also had inconsistent performance with ZyXEL business grade wireless access gateways and their subsequent tech support and really lost confidence in their products other than the 660H-D1which has always been good. The fact that the INSIDE interface at 100Mbps also suffers under a load of ~ 20Mbps on the outside interface is almost like the router is struggling with resources (CPU or memory). Again, the non wifi 660-H has no such problems.

I don't know how this performs on lower speed ADSL connections (ie. whether there is a significant loss of speed for lower speed ADSLMAX connections etc.).

I've seen this many times with that exact same router. ZyXEL claim the new firmware works but we have seen many instances where it does not.

Matt

I had the the same problem with non connection (unable to sync) when upgraded to Nildram (Tiscali) adsl 2+ with this router. Swapped it for a Linksys WAG54G2 which did connect.

Unfortunately my line is long or has interference and even the Linksys could not hold onto the adsl 2+ connection so was put back onto up to 8mb adsl. Swapped back to the Zyxel which then synced.

I flashed the Zyxel with the new firmware when it came out but it broke the wi-fi connection to my iMac and MacBook (Snow Leopard). It seems only a few versions of this routers firmware play well with Mac wi-fi cards. So I downgraded the firmware to version V3.40(ACI.7)C0_20070801 | 08/01/2006 which will connect.