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[FurryNutz]

Ok. You have a connection now and all is working?

What is going on when this disconnect happens? Are users on the phones as well when this happens or is this kind of random behavior?

is Traffic Shaping and QoS enabled on the 655?

[sfedenis]

Just normal everyday internet/phone use. Nothing unordinary that is happening to cause it to go down. Our phones are thru 8x8 (voip) and yes QOS is enabled with settings provided from 8x8.

[FurryNutz]

Can you post a picture of the QoS settings please.
Adding Screenshots In A Post

Also be aware that QoS and your ISP uplink speed maybe a problem due to that this model routers QoS uplink speeds is capped at 2Mb. Which may or may not be a cause of this issue. I'm hoping no and that DMZ on the ISP modem will maybe be the fix. 

[sfedenis]

[FurryNutz]

Are these settings only for the VoIP phones?

[sfedenis]

Correct

[FurryNutz]

Ok, having these settings like this maybe another cause.
These settings are effecting all devices connected to the router. PCs and etc. I presume that PCs and other devices do not need this configuration accept only the VoIP phones. I would recommend that you 1st, reserve IP addresses in sequence, i.e. 192.168.0.150 thru .155 for just the VoIP phones. Then, instead of using 0.0.0.0 thru 255.255.255.255 for the Local IP address range in QoS, change the LOCAL IP RANGE values to 192.168.0.150 to 192.168.0.155 for the LOCAL IP Range for each of these QoS rules. This will tell QoS that only the VoIP phones in the new IP address range to apply this rule too using the reserved IP addresses in that new sequence. All other PCs and device will not get these rules since they don't need this configuration.

2ndly, the Priority should not be 1 as this maybe another cause of the router disconnection. Priority 1 means that all bandwidth would be reserved to these devices and any other devices would be starved by bandwidth and not get much if any Internet data. This maybe why the router could be stopping. I recommend changing the priority to 50.

Then make one more rule in QoS, name it ALL OTHER DEVICEs. Input values for LOCAL IP RANGE 192.168.0.100 to 192.168.0.120. Use 0.0.0.1 to 255.255.255.254 for REMOTE IP RANGE. Select ANY from the Protocol drop down menu. Set the Priority to 128 as this value is normal bandwidth management for the devices in this local address range. Check mark the check box to enable this rule then select Save Settings and reboot now. This rule will allow any PCs or devcies connected in this range to work well with the other QoS rules and still get some priority and bandwidth and not be started for data flow. I would reserve IP addresses for the 5 PCs and any other devices, with in the Local IP Range as well, 192.168.0.100 to 192.168.0.120.

[sfedenis]

Okay. I will try what you recommended. I will have to take some time and do this one at a time because currently I have every device set with a static ip so I will re-group them accordingly.  --  phones --  others -- etc --

[FurryNutz]

Ya, don't use static IPs. Use reserved IPs on the Router. Could be another reason why the router isn't working well.

[sfedenis]

As far as setting statics to the computers, they're the only devices in the office that are not set on statics. I want to make sure I set them right so I can create the appropriate rule in the QoS settings within the IP range. I always get confused on if I change the settings for IPv4 or IPv6. I believe its IPv4. Preferred DNS is the one that I don't know what goes in there. Would I enter the 10.1.10.10 like I did earlier today in the modem?

[FurryNutz]

Understand. Reserved IPs are used in the routers default IP address pool, i.e. 192.168.0.100 thru .199. You can use statics however they need to be out side of the default address pool range. However since you need the router to mange and do QoS operations, you need reserved IPs for this kind of configuration.

Review this: DHCP

Any changes maybe on the router are in a IPv4 environment, i.e ###.###.###.### format. IPv6 is ####.####.####.####.####.####. More complex format.

If you want to use custom DNS settings you can tell the router to use specific addresses under Setup/Internet/Manual. Then turn OFF DNS relay on the router then the router will pass these addresses to each device instead of seeing 192.168.0.1 as the DNS address when DNS Relay is enabled. Some access control features need DNS Relay enabled to work correctly on D-Link routers.

• Turn on or off DNS Relay under Setup/Networking. Link>Finding Faster DNS Addresses using Name Bench and input new DNS addresses under Setup/Internet/Manual.