Bigpipe CGNAT / VOIP Question

Forums › Spark New Zealand (including Skinny and BigPipe) › Bigpipe CGNAT / VOIP Question

RXV

124 posts

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#222623 21-Aug-2017 09:03

Hi,

I am considering moving my fibre connection to BigPipe (or possibly even Skinny) from my current ISP Spark. I use a geo unblocking service as well as VOIP from 2talk which I do via my Spark HG659b modem. Is there any difference between Spark and Bigpipe in terms of what service is offered?

I read that Bigpipe and Skinny both use CGNAT and that this can cause issues for inbound calls, but some posts on old threads claim 2talk works fine (and some that it doesn't) without getting a fixed IP address.

So the question is will I need a fixed IP address (which means using BigPipe), or can I go with Skinny for the cheaper price?

Thanks for your help!

coffeebaron

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#1849653 21-Aug-2017 09:23

Save the hassle and pay the one off for a static IP, problem solved. Yes, you can get VoIP to work over CG-NAT, but just so much easier if it's on a public IP.

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DarkShadow

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#1849717 21-Aug-2017 10:55

Try Bigpipe without the static IP first and see if it works for you, if it doesn't you can buy it then.

jonathan18

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#1849840 21-Aug-2017 14:08

DarkShadow:

Try Bigpipe without the static IP first and see if it works for you, if it doesn't you can buy it then.

Yep, that's the approach I took when switching to BigPipe (same router with fibre and 2Talk VOIP) - luckily for me 2Talk worked fine (and continues to work perfectly) without a static IP, so I've never needed to worry, but if it hadn't I'd just purchased it at that point.

michaelmurfy

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#1849849 21-Aug-2017 14:45

I know 2talk works no problems. I also have a Cisco SPA112 just laying around if you need a phone VoIP adapter.

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aumouth

73 posts

Master Geek

#1853195 27-Aug-2017 10:09

VOIP via BP with CG-NAT works fine as long as your VOIP client (router) auto recognises IP address changes and re-registers with your VOIP server. If not, then the static IP option is needed

richms

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#1853229 27-Aug-2017 12:07

I had no luck with the voip built into the "cisco" small business router when on CGNAT - it was one way or no audio at all. Static IP cleared that right up. Devices behind the router (a crappy old sipura ATA) didnt care either way and worked on both CGNAT and static exactly the same.

Richard rich.ms

RXV

124 posts

Master Geek

#1853301 27-Aug-2017 16:31

Thanks all for your replies. It sounds like it should work without needing the fixed IP.

jonathan18:

Yep, that's the approach I took when switching to BigPipe (same router with fibre and 2Talk VOIP) - luckily for me 2Talk worked fine (and continues to work perfectly) without a static IP, so I've never needed to worry, but if it hadn't I'd just purchased it at that point.

@jonathan18, so just to confirm you have the same HG659b router and it works OK? If that is the case I'm tempted to sign up for Skinny for $68 per month.

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Coon

97 posts

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#1860060 7-Sep-2017 00:15

2talk work fine for me, with old pap2t voip adapter

dolsen

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#1860086 7-Sep-2017 08:01

The 2talk can work fine, the geo unblocking probably won't until you get a fixed IP address (or you will get a random region based on someone else) I believe.