Registration fails when Internet goes down and back online

I have a Gigaset N300a IP that is connected to the Linksys Hydra Pro 6 router. I have been having issues for couple of months now where I get registration failed. I was trying to fix it, it seems to apparently be routing but still don't know how to fix it. So I changed on the Gigaset interface the ip address assignment to static with preference dns 8.8.8.8 and alternate dns is empty. That seems to fix the problem slightly with on the router reserved the ip address. So then this has helped me from stopping turning the mains off for router and gigaset. Since just rebooting it or turning mains off for gigaset didn't work.

However the problem is still there so I have partially fixed now I just need to reboot gigaset from.interface or just turn it off from mains and fixes it. But still get the problem if Internet goes down and back online the registration failed then have to reboot the gigaset which I don't want to keep doing. Also I have done port triggering which is also not helping. Is there a permanent fix to this, I don't know how how to fix it.

Can someone help me please. I don't know what to do. Really miss the copper line for landline so simple. Also I saw this option called STUN when entering the credentials voip and setting it up on advanced setting. Would STUN help or not don't really know what it is. Or is it something on the router I need to change don't know what to do.

SOMEONE HELP ME PLEASE

Edited by HAli24 (Thu 21-Dec-23 05:51:37)

From a position of very little experience, I would be looking at these things:

* Is your internet connection set to be fully online all the time or does it have some level of connecting on demand
* who provides your internet and your voip
* can you use a wire ethernet voip phone on the unit, if so with what result?
* what is the registration timeout on the unit and what happens if you wait at least that long after discovering the problem
* can you ping the registration site when all is working OK and if so, can you then ping this site when the unit has gone down

Edited by DFScale (Thu 21-Dec-23 09:19:48)

I can't find anything device specific for the Linksys Hydra Pro 6. Does it have an option for SIP ALG? Possibly under Configuration > Administration > Gateway Function. If so, I'd start by ensuring SIP ALG is disabled/turned off. It's been a few years since I've played with SIP, but I vividly recall that 90% of my issues were due to SIP ALG. Even on relatively expensive Fortigate firewalls.

Yes it does and it's turned off from the start.

On router Internet connection type is keep alive redial period 30 seconds.
The provider is for both is one company called Octaplus which provide Internet and voip.
I am already using ethernet the gigaset is connected to router through cat5e ethernet cable.
I know Registration refresh time is 180 sec
I don't know what you fully mean with registration timeout is it on unit interface.
I know that originally takes 7 days then registration failed.
I know that if I leave it alone with registration failed even up to 24 hours it still registration failed
I can ping it when it's working and not working do through router interface right.

What indicates that the Registration is lost? If the Gigaset indicates a loss of registration, it should try again (at certain intervals until it succeeds).

When your broadband goes down and comes back up again, does the public IP address change (my guess is that it does). Then the Gigaset would need to register again as otherwise the VoIP server would not know your new IP address. Keepalives won't help, because they only keep the NAT rules in place.

I looked at the Octaplus website, it seems they offer FTTP only. Are you on FTTP, i.e. the Linksys plus into the ONT?
Why does the broadband go down from time to time if it really is FTTP?

If you get broadband and phone service from one provider, you should raise the problem with them. Do they offer static IP addresses, could not find anything on their website

It indicates on the handset which is a dec phone so connected to gigaset N300A IP. Yes it seems public ip address does change. So on the router should I change it to 'connect on demmand' that is the other option instead of keep alive. I am on 900Mbps so yes I am FTTP. And it does landline option is Select landline option
Keep my current landline number
Get a new landline number
No Landline Required.

I donteven know why Internet goes it's pretty much gone bad with the maintenance and loss of Internet. So outages occasionally happen. Unfortunately today my Internet went down and then came back online and voip registration failed and then reboot the gigaset N300a IP then registration worked.

The router is connected to ONT I am using my own router since its good but problem just with voip. And the way its connected is through PPPoE. So because of this I don't have to use bridge mode. However had to buy a voip because of using my own router. I wonder if I I bought a voip adapter would I get same problem. But still just want to fix the gigaset N300A IP.

They do offer static ip address for ipv6 the problem is it occasionally drops now. And for 1 week they turned it off due to server maintenance. I have been trying but they always are busy. I feel its routing problem but don't know how to fix this.

Even if you see octaplus status page is crazy like amount of maintenance and fixes is crazy starting to regret getting full fibre and especially voip. It was so easy back in the day using copper cable for landline no problems.

In reply to a post by HAli24:

However had to buy a voip because of using my own router. I wonder if I I bought a voip adapter would I get same problem. But still just want to fix the gigaset N300A IP.

They do offer static ip address for ipv6 the problem is it occasionally drops now. And for 1 week they turned it off due to server maintenance. I have been trying but they always are busy. I feel its routing problem but don't know how to fix this.

Even if you see octaplus status page is crazy like amount of maintenance and fixes is crazy starting to regret getting full fibre and especially voip. It was so easy back in the day using copper cable for landline no problems.

Did Octaplus provide you with a router from them? Could you try that just to rule out YOUR router settings for a couple of days.

FTTP should never drop unless (a)set to dial on demand OR (b)some kind of fault on the connection.

Definitely keep trying Octaplus on the phone, as I think they should be able to provide better advice on why your connection is dropping. If it is indeed your FTTP connection dropping, and not just the Gigaset rebooting itself.

Is the Linksys router "New" to you - or did you use it on a previous ISP? Do you know its a stable platform in the first place?

The connection will still drop even if I use Octaplus router overall its kinda just bad company with so many times Internet goes down. So just fault with connection. They did give advice it was due maintenance so its their fault on their side unfortunately. It's a stable router.

Have a look at this article https://www.sandon.it/2022/11/13/voip-behind-nat/ it discusses issues similar to what you are experiencing.
Also check whether Octaplus use CGNAT, i.e. does your router get a public or private IP address from the ONT.