Hi,

In reply to a post by einsteinagogo:

In reply to a post by Dassa:

Hi,

Yes, I have had multiple VoIP devices registered with AAISP and they all ring when the number is called. They have all been on separate IP addresses though, some might have been through NAT but not more than one via the same NAT gateway.

I strongly suspect that this is a NAT issue.

When you look at the AAISP VoIP config pages, what are the ports / IP addresses listed for the registered devices?

Is there any way to show how your router is maintaining the mapping between the internal port / IP address and the external port / IP address for each of your VoIP devices? Does your router have a VoIP ALG, is it enabled and if so exactly what functions does it do?

NAT and VoIP generally do not play nicely together and I can see ways that multiple VoIP devices on your side could each overwrite the NAT mapping in your router leaving only the last registered device properly connected.

did you read the post, about four devices being used at different locations (IP). and only the lasty registered device rings.

"NAT and VoIP generally do not play nicely together and I can see ways that multiple VoIP devices on your side could each overwrite the NAT mapping in your router leaving only the last registered device properly connected."

does this not negate NAT, as four seperate IPs will all register as a single mapping in the router?

So, to be clear, you arranged things so that all four phones were connected via different NAT gateways, or did you simply move all four phones to a different NAT gateway? In the latter case you are not proving anything (other than perhaps the two NAT gateways exhibit similar behaviour).

NAT of SIP is complex, as explained by the AAISP page I posted a link to and whether it works depends, in detail, on what goes on in the router. Making the ports (and port ranges for calls) different across the phones might help if they are all to sit behind the same NAT gateway.

In reply to a post by Dassa:

Hi,

In reply to a post by einsteinagogo:

In reply to a post by Dassa:

Hi,

Yes, I have had multiple VoIP devices registered with AAISP and they all ring when the number is called. They have all been on separate IP addresses though, some might have been through NAT but not more than one via the same NAT gateway.

I strongly suspect that this is a NAT issue.

When you look at the AAISP VoIP config pages, what are the ports / IP addresses listed for the registered devices?

Is there any way to show how your router is maintaining the mapping between the internal port / IP address and the external port / IP address for each of your VoIP devices? Does your router have a VoIP ALG, is it enabled and if so exactly what functions does it do?

NAT and VoIP generally do not play nicely together and I can see ways that multiple VoIP devices on your side could each overwrite the NAT mapping in your router leaving only the last registered device properly connected.

did you read the post, about four devices being used at different locations (IP). and only the lasty registered device rings.

"NAT and VoIP generally do not play nicely together and I can see ways that multiple VoIP devices on your side could each overwrite the NAT mapping in your router leaving only the last registered device properly connected."

does this not negate NAT, as four seperate IPs will all register as a single mapping in the router?

So, to be clear, you arranged things so that all four phones were connected via different NAT gateways, or did you simply move all four phones to a different NAT gateway? In the latter case you are not proving anything (other than perhaps the two NAT gateways exhibit similar behaviour).

NAT of SIP is complex, as explained by the AAISP page I posted a link to and whether it works depends, in detail, on what goes on in the router. Making the ports (and port ranges for calls) different across the phones might help if they are all to sit behind the same NAT gateway.

all four phones were connected using different ISPs, in four different physical locations, and routers, andf configurations etc

only the last registered device ever rang!

All phones could be used for outgoing calls.

on the AAISP page is the Registered Devices, it's make and model and version and Internet Outbound IP address

there are no other ports, configurations of anything

if we experiment with rotation power off and on, we can get every device to ring, but not all at the same time consistent wuth Last Registered Device rings. (observed by 3 others!)

Hi,

I have done a quick check and certainly with two devices registered they both ring at the same time. It sounds like you have either found a bug in AAISP's VOIP servers, specific to you and your friends or there is a weird configuration issue somewhere.

Separately, I note that the control pages are misbehaving at the moment and taking ages to update the list of registered devices but that doesn't appear to affect functionality.

You might see it as being a step backwards but we use a Gigaset N300a Base Station and six Gigaset C575a Dect handsets.

We have two separate VOIP providers, (Sipgate Basic and Voipify), with two separate VOIP lines and we can set via the N300a how incoming and outgoing calls are made/received by which DECT phones. - (We kept to Gigaset because mixing and matching systems can be more difficult).

In our case: all six phones ring when there is an incoming call on either line and if one of the six phones is in use then the other five phones ring if an incoming call comes in on another line.

This was set up within the N300a menu.

We have never used the Grandstream 812 but maybe there is a similar menu choice within the Grandstream 812

I am not sure how your VOIP provider would have any say in which of your phones rings as I suspect that is handled by your internal phone systems and not by you VOIP Provider.

If it is a VOIP provider issue the take a look at Voipify and ask them if your present setup would be resticted by them in some way.

https://www.voipify.net/?mtm_cid=235201820&mtm_kwd=&...

In reply to a post by Dassa:

Hi,

I have done a quick check and certainly with two devices registered they both ring at the same time. It sounds like you have either found a bug in AAISP's VOIP servers, specific to you and your friends or there is a weird configuration issue somewhere.

Separately, I note that the control pages are misbehaving at the moment and taking ages to update the list of registered devices but that doesn't appear to affect functionality.

it's never worked for me in two years, just revisting as more and more VOIP people leave landlines, I thought it might be me.

We also have more than one line, and it does not work on both.

and this has been observed by at least four people including me. (and AAISP support didn't really no why, other than suggest ring the other number)

Thanks for your help, may its time for a VOIP Dect Base

In reply to a post by Fido:

You might see it as being a step backwards but we use a Gigaset N300a Base Station and six Gigaset C575a Dect handsets.

We have two separate VOIP providers, (Sipgate Basic and Voipify), with two separate VOIP lines and we can set via the N300a how incoming and outgoing calls are made/received by which DECT phones. - (We kept to Gigaset because mixing and matching systems can be more difficult).

In our case: all six phones ring when there is an incoming call on either line and if one of the six phones is in use then the other five phones ring if an incoming call comes in on another line.

This was set up within the N300a menu.

We have never used the Grandstream 812 but maybe there is a similar menu choice within the Grandstream 812

I am not sure how your VOIP provider would have any say in which of your phones rings as I suspect that is handled by your internal phone systems and not by you VOIP Provider.

If it is a VOIP provider issue the take a look at Voipify and ask them if your present setup would be resticted by them in some way.

https://www.voipify.net/?mtm_cid=235201820&mtm_kwd=&...

Thanks we do have a N300A !

Maybe it's just time to ditch the Grandstream, (it crahes anyway!) and dedicated VOIP phone, that could be used just on the other line....

and we carry on using our DECT units, need to find batteries or purchase new DECT phones.

have you tried setting a delay here

When calls arrive for 0x they can try connecting to multiple possible targets, all at once, with optional delays:

In reply to a post by Taras:

have you tried setting a delay here

When calls arrive for 0x they can try connecting to multiple possible targets, all at once, with optional delays:

optional delays are not possible from the AAISP configuration, optional delays are only possible specifing different numbers, there is a Delay feature which I assume is the delay between each target but this does not work

they are all supposed to ring at the same time (it does not work)

Edited by einsteinagogo (Tue 05-May-26 17:12:27)

just to confirm we are talking about voip from aa.net.uk

We don't use AA as an ISP.

VOIP only, and don't use their router as well, maybe the issue

So it's like comapring apples and pears