Grandstream Reliability Tip

**Brian** · 09-28-2008 06:54 PM

1234 is not working for my adapter.

**christcorp** · 09-28-2008 07:03 PM

For a static DNS; I suggest using 1 from your ISP; it will be the fastest DNS being you have to hit your ISP before you go anywhere on the net. As a secondary, I recommend 4.2.2.1 That is a dns from Level 3. It is a public that will not change. Plus; being Level 3 takes care of most of VoipO's routing, it's probably a better DNS to use.

For IP address: USA; when you say both your GS are on a hub to your modem; are you saying that you are paying for multiple static IP's from your ISP? Or, is your modem the type like many that has a built in router? You said that your pc's are behing a router. i assume that the router is getting the "Public IP Address" from your modem; OR it too is getting a "Private IP Address" in the 192.168.x.x range. Unless you're paying for multiple Public IP addresses from your ISP; you can definitely give your GS and all your PC's a static Private IP address. Maybe I am misunderstanding your network setup. Later... Mike....

**VOIPoTim** · 09-28-2008 07:25 PM

Originally Posted by Brian

1234 is not working for my adapter.

Should be 123. Sorry.

**1bird2** · 09-30-2008 12:23 AM

Setting a static IP does not seem to work for me.

I log in as Tim mentions. Set IP address to a private IP in my network (NAT'd behind a FW), set subnet, default route and add two public DNS server addresses (my ISP DNS servers)

I update this info, select "Update". Message returned that values are saved, reboot to take affect. I reboot device remotely. Wait 30 secs and login again.

THe static IP is set (as I login with the new IP address in the browser), but the DNS entries are gone and all set to 0.0.0.0. I also notice I have lost dial tone and LED on GS is now flashing on / off with red color.

Log back in to GS. Reset to Dynamic (note, I have reserved an IP for the GS by MAC address), save configuration, reboot GS. Everything works after I do this (i.e. get dial tone, can make call, phone rings when I call a Virtual number I have assinged to the GS -- as I am waiting for my port to complete).

Thoughts anyone?

Thanks

1bird2

**dswartz** · 09-30-2008 06:09 AM

Hmmm, sounds like a firmware bug of some sort. Setting a static IP should not have caused it to lose the other settings

That said, for things like this (I have a GS behind my asterisk box, to service the house wiring), I always go for a 'static dhcp' like you (based on the MAC).

**zevin** · 11-03-2008 11:36 AM

Originally Posted by 1bird2

Setting a static IP does not seem to work for me.

I log in as Tim mentions. Set IP address to a private IP in my network (NAT'd behind a FW), set subnet, default route and add two public DNS server addresses (my ISP DNS servers)

I update this info, select "Update". Message returned that values are saved, reboot to take affect. I reboot device remotely. Wait 30 secs and login again.

THe static IP is set (as I login with the new IP address in the browser), but the DNS entries are gone and all set to 0.0.0.0. I also notice I have lost dial tone and LED on GS is now flashing on / off with red color.

Log back in to GS. Reset to Dynamic (note, I have reserved an IP for the GS by MAC address), save configuration, reboot GS. Everything works after I do this (i.e. get dial tone, can make call, phone rings when I call a Virtual number I have assinged to the GS -- as I am waiting for my port to complete).

Thoughts anyone?

Thanks

1bird2

Are we talking about the 286 or the 502?

I tried to set the 286 I have and found the same problem. DNS is back to 0.0.0.0 and no joy.

**chpalmer** · 11-03-2008 08:19 PM

Put in a ticket and tell them that provisioning keeps blanking out your static settings. They have to fix that on their end.

Ive set up my routers to statically assign my equipment their addresses and have no problems this way. ymmv.

**zevin** · 11-03-2008 10:25 PM

chpalmer I was testing, but I guess I should put in a ticket. I also have my router providing the IP via MAC address like you. So, once I put it back to "my way" I again have joy. I read what 1bird2 had said and was testing and confirming for myself. I would imagine Tim would read this and look into it.

FYI - the IP address stayed only the DNS changed.

**1bird2** · 11-05-2008 11:51 PM

286. I have since moved to the 502 due to other issues. The 502 is much more reliable. As for this issue/tip, I have not made any changes on the 502. Everything is working well and I am inclined to not make any changes at this time with the DNS settings (static) as per the original post of this thread. I subscribe to the "if it ain't broke, don't fix it...."

-bird

**VOIPoTim** · 11-06-2008 12:05 AM

Originally Posted by 1bird2

286. I have since moved to the 502 due to other issues. The 502 is much more reliable. As for this issue/tip, I have not made any changes on the 502. Everything is working well and I am inclined to not make any changes at this time with the DNS settings (static) as per the original post of this thread. I subscribe to the "if it ain't broke, don't fix it...."

-bird

Glad to hear. The 502 does work for 99% of customers out of the box with no tweaking usually. Overall, it's a great device.