Cannot receive voip calls

Forums › VoIP › Cannot receive voip calls

lemuzz

67 posts

Master Geek

# 205417 12-Nov-2016 09:54

I have recently had fibre installed. For a Broadband supplier I have gone with Bigpipe. For a telco I have gone with 2 Talk. Phone (which I have had for some time and was working fine with 2Talk on the copper line) is Gigaset and Router is TP Link. I have set up my Gigaset and can make Voip calls but not receive calls. Can anyone tell me why and lead me through the solution. Thanks. Lemuzz

nicmair

115 posts

Master Geek

# 1668436 12-Nov-2016 10:31

the issue is the TP link Router, you have to do this (well its what I use to have to do) each time it is powered off.

http://www.tp-link.com/en/article/?faqid=342

rmmod nf_nat_sip.ko
rmmod nf_conntrack_sip.ko

Hope this works for you

sbiddle

28260 posts

Uber Geek

Moderator

Trusted

Biddle Corp

Lifetime subscriber

# 1668437 12-Nov-2016 10:34

Big pipe uses CGNAT (basically double NAT) that can break VoIP. Your best option is to pay for a public IP.

lemuzz

67 posts

Master Geek

# 1668502 12-Nov-2016 12:52

I forgot to say I have internet but can't receive Voip calls, but I can make calls

sbiddle

28260 posts

Uber Geek

Moderator

Trusted

Biddle Corp

Lifetime subscriber

# 1668508 12-Nov-2016 13:03

lemuzz:
I forgot to say I have internet but can't receive Voip calls, but I can make calls

Which is exactly what happens with double NAT. There is no inbound route to your IP because the SIP proxy thinks your IP is the public IP, not your IP which isn't routeable.

robjg63

2979 posts

Uber Geek

# 1668524 12-Nov-2016 13:37

I am on bigpipe fibre with landline on 2talk (cisco spa-112).
We have a Tp-link Archer c7 router.
It all works wonderfully.

I did pay for a static iP address as I use a geo-unblocker.
Bigpipe only charge a one-off of $45 for a static iP address so it seemed like a no brainer.
I know several ISPs charge around $15 a month forever for this feature.
EDIT: I never had to make any special settings for voip in the router.

Nothing is impossible for the man who doesn't have to do it himself - A. H. Weiler

speed

207 posts

Master Geek

# 1668558 12-Nov-2016 14:30

Ewwww! CGNAT? Really!

*choke*

Re ISPs charging for statics; yep some do and indeed for a range of prices. But if you shop around you can get it for free! My ISP includes free static IPv4, and a free static /56 allocation of IPv6 too. They even do reverse DNS for my statics at no fee, and VoIP plans available too :)

http://www.mynxnet.com/

RunningMan

5572 posts

Uber Geek

# 1668593 12-Nov-2016 15:15

speed:

Ewwww! CGNAT? Really!

*choke*

<makes mental note to never buy service from Bigpipe>

Re ISPs charging for statics; yep some do and indeed for a range of prices. But if you shop around you can get it for free! My ISP includes free static IPv4, and a free static /56 allocation of IPv6 too. They even do reverse DNS for my statics at no fee, and VoIP plans available too :)

http://www.mynxnet.com/

This is not new. For the majority of users, it simply isn't an issue, and reduces costs as their IPv4 allocation is substantially reduced. For those requiring a public or static IPv4 address, this is provided for a one off fixed charge. Looking at your ISP's website, they would charge $10-$20 /month more for basically the same product. Of course, not quite comparing apples with apples, as there are a couple of additional services provided there, but quite niche services in many ways.

speed

207 posts

Master Geek

# 1668618 12-Nov-2016 15:42

This is not new.

I never said it was new (although to be fair, CGNAT hasn't been widely deployed in NZ for very long, so it kinda is still pretty new). I just said it's sh|t. And it is! (sh|t)

I understand the market forces behind it just fine. But to me (and many others!), it's not real internet. It's just 'consumer-net'.

Peh! No thank you, sir. There are all manner of applications I find valueable which won't run on that crap.

I could _maybe_ consider CGNAT IPv4 if there was working public IPv6 available alongside, but I suspect in this case there isn't.

Can any Bigpipe users confirm if they're getting IPv6? I've noticed VF are doing it on their UFB circuits now, which is great to see...

But I'm getting terrible off-topic now!

robjg63

2979 posts

Uber Geek

# 1668621 12-Nov-2016 15:48

Bigpipe ipv6 has been discussed on GZ - some people were doing some beta testing around June In think.

Probably ties into this:

http://pages.bigpipe.co.nz/bigpipe-scheduled-maintenance-9-june-2016/

Nothing is impossible for the man who doesn't have to do it himself - A. H. Weiler