The saga of moving from ADSL2 to Fibre hasn't been as smooth as I wanted.  The issues I hoped were down to a faulty router haven't gone away.

Install completed over a week ago by Downers. Actrix my ISP supplied a Netcomm Wireless NF5 as my wireless router.   VOIP on my end was coming and going even though Actrix ( my ISP ) saw it as always registered at their end. We also had frequent disconnects ( 3 or 4 a day ) as well where the Netcomm NF5 would appear to crash - first indication would be the yellow exclamation mark in the botttom right of my desktop window. No internet access and also couldn't log into the router.

They sent a new router. Seemed to resolve the VOIP issues.   4 hours in. Crashed again. No internet and can't access it.   Reboot. 30 hours later. Crashed again. No internet and can't access the router admin page.

In the first week I reckon it's needed about 20 reboots. When it does work, I generally acheive close to the 200/100 running speedtests.

Actrix helpdesk have been extremely helpful so far but I believe they are exhausting what they can check. They can see all the notes and all the disconnects so are very understanding but not really able to try much else.  I'm trying to isolate it my end prior to them speaking to snap who I believe they wholesale from. Snap will send out an engineer who if he can't find a fault will charge me.  If that means he runs speedtest on my machine and all seems fine then it's gonna be pretty pointless.

Prior to that happening - what can i test my end / what are likely culprits that could be causing this. The fact I can't login to the admin section of the unit when internet access drops indicates to me it's crashed.

What I do know is the firmware on the unit is uptodate. We are running several wireless devices - 3 samsung phones, an IPAD and a couple of laptops. Generally not always together although they are connected. On wired I have a patch panel with 19 outlets wired. We only patched in 4 of them at this time and they generally are used for surfing the net or playing WoW. 

I thought it may be heat as well given the hot days but it crashed again this morning - room temp was 19c and unit was slightly warm only..nowhere near hot to the touch. Not much access apart from me FTP'ing a file and WOW being played.

The ONT light showing a connection appears to be stable and on. It's tucked away in a cupboard so I haven't been able to see if that is dropping at all. 

Any help or pointers appreciated. I'm almost at the point of purchasing a higher quality wireless modem / router to see if it's the netcomm not playing nicely. Actrix said they weren't the most expensive but generally were stable across their network.

Thanks for your help.