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Remote home SIP user behind NAT - HiPATH 400

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jarmac

Technical User
Oct 2, 2012
58
PL
Hello i need informatiom about solution to do remote home SIP user beahind NAT -
user maust have HiPATH 4000 access

is exist any solution of this, OSV have SBC to connect remote user, how to make this in Hipath 4000 V5.0

Regards
jar_mac
 
Hi
The first system I know that can do it directly would be OpenScape 4000 V7 (HiPath 4000 V7)
This would be a home user feature which I was told about but cannot find any info on.
It is a remote extension registered to a virtual STMI card in a Virtual HiPath setup.

I have no info of it working on V5 however you might be able to setup a home router/Netgear type of unit that would need to see the STMI card on the Internet to provide the extension.

 
Thank Yoy sbcsu

I tested STMI with public network adress, and this config do not work properly.
I think ,it should be SBC or SIP Proxy/Nat translator confgured on edge of customer network

But docu of SBC is ....

Ok thanks so much
regards
jarmac




 
Yes that would be more likely - It is something I would like to work on myself but I would probably use V7 for it
 
I have a VPN connection at home to the work network, and I use an OptiClient. It works great. I started on V5 and now have V7 but didn't know there was any difference until now. I doubt you could assign a public IP address to a STMI, but the more likely solution would be to create a subdomain similar to voip.mycompany.com, and that subdomain can point at one of your company's static IP addresses that can then be routed in the firewall or other network appliance to be sent to the on-network address of the STMI card. If I rolled out this scenario I would dedicate one STMI for this purpose to minimize the affects on the system if someone were to get access to that board. I think that would be a workable solution. I don't know how much lag would be introduced by having the internet, nameserver and firewall touching everything on the way through. If you are using SIP, one STMI should be able to support 120 devices.
 
Hi

Thats right , configuration with VPN and Siemens aps will work perfect

But my customer has own devices and SIP clients on it, and he wonts to work everyware, at local network and also by internet.
So You forgot about NAT problem, like I said I was tryied to conect STMI with public network - and with SIP clients that was a some problems

Regards
jarmac
 
Have your tried going into your router and assigning the port that is connected to the STMI into the DMZ? That will allow all ports to flow through to where the board is connected. Even if you only have one Static IP address you might be able to get it to work using port forwarding, as it is highly unlikely any other regular network traffic would be coming in on those port numbers other than from the phones. I have never had to play around with this with phones, but I have done my fair share of it in the past for other reasons, and if you study how your router works you might be able to pull it off!
 
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