Two ATAs - how to port forward?

[sharky]

Got a problem,

I have a two line PAP2T working great for a few years with 2 lines from Freephoneline. From my router I port forward 5060-5061, 6060-6061 and 13000-13001 (both TCP and UDP) from my router to the IP of the PAP2T.

I had someone move in with a Grandstream 1 line adapter and freephoneline. I changed the port in the Grandstream to 5070 and port forwarded TCP and UDP 5070 to the IP on the router. Still doesn't work, all I get is a fast busy on the grandstream. Status page says:
Registered: Yes
PPPoE Link Up: disabled
NAT: detected NAT type is open Internet
NAT Mapped IP: 0.0.0.0

Are there other ports I need to forward to make this work.

Seems when I pick up line one on the PAP2T (port 5060) the grandstream goes off-hook. When I pick up line two on the PAP2T (port 5061) it doesn't effect the grandstream.

PAP2T line 2.jpg

Pap2T line 1.jpg

Granstream conf.jpg

[dibsmft]

You need to make sure that your ATA has a fixed internal IP from the router. Forward ports 5071 and 5072 UDP to your ATA and give the other ATA a fixed IP and for port 5073 UDP to it as well as 6064 - 6068 UDP. The settings on the yellow page above look wrong so they will need to be changed to match what is forwarded and it says STUN "Yes" but gives no STUN server...etc

[sharky]

Sorry - don't quite understand.
Each ata right now does have a static IP internally
ATA1 (PAP2T) is .118 - are you saying to forward ports 5071 and 5072 UDP (I am using port 5060 and 5061??) see conf above...
ATA2 (Grandstream) is .5 - are you saying to forward ports 5073 UDP as well as 6064-6068 to it (I am using port 5070??) see conf above

with repect to the setting of the STUN server - I have tried seeting NO as well as adding STUN servers - but referring to the device configuration sharing section of this forum, the Grandstream recommendation is to put it with YES and nothing in the blank - see http://forum.fongo.com/viewtopic.php?f=15&t=647 - this is what is recommended. Should I change it to NO or should I set a STUN server here?

Right now my router forwards 5060-5061, 6060-6061 and 13000-13001 UDP and TCP to .118 (ATA1 - two line - PAP2T - blue confs above) and 5070 UDP and TCP to .5 (ATA2 - one line - grandstream - yellow conf above).

AF

[dibsmft]

Good .... needed to check. Do both get the correct IP when they boot?
Yes for ATA 1 set the internal SIP line 1 as 5061 (internal) and line 2 as 5062 (internal). The external port should be 5060 (Sorry, I got confused with another question that I was answering). Don't forward 5060 at all and you need to forward 5062.
ATA2 to avoid confusion you can leave it as SIP port 5070 (it does not really matter as this is the internal port - the GS uses 5060 as the external by default).
Try without STUN first but if you still get the problem try setting a STUN server (eg. stun.callwithus.com or stun.ekiga.net).
I can run a 3 line phone, a GS286, a SPA3102 etc. all running voip OK so you should be able to as well.

[Bloodsong]

You shouldn't worry too much about doing PAT.
Multiple SIP ports are supported and should be used.
Further you can't rely on multiple internal SIP ports translating to a single external to work properly when more than one device are receiving said signal.

Allow 5060 and 5061 both to forward straight through to ATA 1, and forward another range to ATA 2.
And as you can see in your ATA setting screenshot above you can (and should) set the SIP port on the line in the ATA to match the port that has been forwarded to it.

Example
---------------------
Router: 192.168.42.1
ATA 1: 192.168.42.11
ATA 2: 192.168.42.12

Port Forwarding
5060-5061 --> 192.168.42.11
5070-5071 --> 192.168.42.12

ATA 1 -- Line 1: SIP Port 5060
ATA 1 -- Line 2: SIP Port 5061

ATA2 -- Line1: SIP Port 5070

(Note any acceptable class C addressing scheme may replace the one above, any acceptable SIP port configuration may also replace the ones chosen.)