[Snap] Snap VoIP horribly broken

Forums › 2degrees (including Slingshot, Orcon, Flip, Stuff Fibre, MyRepublic, 2talk and Vocus) › [Snap] Snap VoIP horribly broken

CcMaN

87 posts

Master Geek

#119456 1-Jun-2013 20:58

Once again, I'm getting no help going through the usual helpdesk channels with Snap. So to geekzone I come. I am really questioning whether Snap VoIP is anywhere close to a replacement for a POTS.

I can deal with the DTMF issues, but I would really hope that they are fixed soon. But the latest odd bug is that my telephony devices connected to the Fritzbox will randomly ring, with no-one actually calling me. My Fritzbox logs will show:

So far I have called the Snap Helpdesk, and all they have told me is that my Fritzbox is configured correctly, and someone must be pranking me. I don't believe this for one second, as I never had this issue until I switched from POTS to VoIP.

Secondly, my telephone number will deregister with no warning whatsoever, and will not automatically reconnect to Snap's VoIP servers without me having to manually restart my modem. I found this out today when someone was trying to get hold of me. This is unacceptable.

To me it seems that either the Fritzbox is a flop or Snap's VoIP service is not up to par.

1 | 2

BDFL - Memuneh
79277 posts

Uber Geek

Administrator

ID Verified

Trusted

Geekzone

Lifetime subscriber

#829392 1-Jun-2013 21:08

Was this Fritzbox configured by yourself or Snap?

nitrotech

1285 posts

Uber Geek

#829397 1-Jun-2013 21:12

I'm using 2talk on the fritz and the only problem that we have is the odd strange noise in the ear piece every so often (not enough to worry me)

It does sound like a problem with the voip service from snap rather than the box

freitasm

BDFL - Memuneh
79277 posts

Uber Geek

Administrator

ID Verified

Trusted

Geekzone

Lifetime subscriber

#829398 1-Jun-2013 21:15

nitrotech: It does sound like a problem with the voip service from snap rather than the box

It depends. If it is configured by the user, it could be some security setting left open allowing SIP probes. If configured by Snap then it's something else.

insane

3239 posts

Uber Geek

ID Verified

Trusted

#829400 1-Jun-2013 21:16

freitasm:
nitrotech: It does sound like a problem with the voip service from snap rather than the box

It depends. If it is configured by the user, it could be some security setting left open allowing SIP probes. If configured by Snap then it's something else.

I'm wondering about the port forwarding setup too, sounds suspicious.

nitrotech

1285 posts

Uber Geek

#829416 1-Jun-2013 21:43

freitasm:
nitrotech: It does sound like a problem with the voip service from snap rather than the box

It depends. If it is configured by the user, it could be some security setting left open allowing SIP probes. If configured by Snap then it's something else.

Yep agree my fritz came pre-confiigured by snap so thinking that the OP would be the same.

insane:
I'm wondering about the port forwarding setup too, sounds suspicious.

The wizard to setup a phone line on the fritz is really id10t proof - just put in the basic sip settings and the box does the rest.

CcMaN

87 posts

Master Geek

#829424 1-Jun-2013 21:54

freitasm:
nitrotech: It does sound like a problem with the voip service from snap rather than the box

It depends. If it is configured by the user, it could be some security setting left open allowing SIP probes. If configured by Snap then it's something else.

Configured by Snap, and helpdesk have logged in to check my settings over the phone. When I run a port scan from my mobile phone to my home IP I do see that 5060 is open. Not sure if that is suppose to be the case for it to work.

coffeebaron

6233 posts

Uber Geek

Trusted

Lifetime subscriber

#829443 1-Jun-2013 22:14

CcMaN:
freitasm:
nitrotech: It does sound like a problem with the voip service from snap rather than the box

It depends. If it is configured by the user, it could be some security setting left open allowing SIP probes. If configured by Snap then it's something else.

Configured by Snap, and helpdesk have logged in to check my settings over the phone. When I run a port scan from my mobile phone to my home IP I do see that 5060 is open. Not sure if that is suppose to be the case for it to work.

Leaving port 5060 open is not good, and should not be necessary.

Rural IT and Broadband support.

Broadband troubleshooting and master filter installs.
Starlink installer - one month free: https://www.starlink.com/?referral=RC-32845-88860-71
Wi-Fi and networking
Cel-Fi supply and installer - boost your mobile phone coverage legally

Need help in Auckland, Waikato or BoP? Click my email button, or email me direct: [my user name] at geekzonemail dot com

Quic Broadband

Move to New Zealand's best fibre broadband service (affiliate link). Note that to use Quic Broadband you must be comfortable with configuring your own router.

freitasm

BDFL - Memuneh
79277 posts

Uber Geek

Administrator

ID Verified

Trusted

Geekzone

Lifetime subscriber

#829444 1-Jun-2013 22:16

I have three SIP lines at home and don't have any port open for those. It shouldn't be needed in modern setups.

CcMaN

87 posts

Master Geek

#829445 1-Jun-2013 22:20

Well, there is no option AFAIK to close that port.

jimbob79

673 posts

Ultimate Geek

#829496 2-Jun-2013 01:23

nitrotech: I'm using 2talk on the fritz and the only problem that we have is the odd strange noise in the ear piece every so often (not enough to worry me)

I had a similar problem with my VoIP setup with 2talk, but was not using a fritz box but Linksys spa2102, After a few days I realized that the AC/DC transformer was radiating some EMF signal and was interfering with the spa2102 and causing a weird buzzing sound in the handset.

I just simply moved the transformer and ATA away from each other by about 200-300mm and the problem was solved. May be this could work for you.

sidefx

3711 posts

Uber Geek

Trusted

#829515 2-Jun-2013 09:42

freitasm: I have three SIP lines at home and don't have any port open for those. It shouldn't be needed in modern setups.

That port just seems to be open on the Fritzbox and there doesn't seem to be any way to close it. Mine is open too. Apparently has "inbuilt protection from SIP attack" according to this vendor:

http://forums.whirlpool.net.au/archive/2029975

@OP: 2talk + Fritzbox here and it generally works fine so I don't think it's a fritzbox issue, unless yours is faulty.

"I was born not knowing and have had only a little time to change that here and there." | Octopus Energy | Sharesies
- Richard Feynman

sbiddle

30853 posts

Uber Geek

Retired Mod

Trusted

Biddle Corp

Lifetime subscriber

#829537 2-Jun-2013 10:44

I would highly suspect the issue is just inbound SIP bots hitting the box. It's pretty common these days to see lots of these bots attempting to find insecure PBX's. I've spent a lot of time playing with the Fritz!box and have a few models here but I'm not a fan of their SIP stack, but do love the functionality it offers. Because I've never deployed any in a production environment it's not something I've tested.

Many SIP stacks incl those from Cisco have the ability to only allow SIP traffic from the defined SIP proxy, and this should be enabled by default to avoid issues such as this which can cause your phone to ring randomly as the bot keeps sending SIP headers. Just be aware that some providers such as 2talk won't work with this.

You should also never have port 5060 forwarded for any VoIP equipment unless you fully understand the risks of doing so.

richms

28176 posts

Uber Geek

Trusted

Lifetime subscriber

#829671 2-Jun-2013 15:36

I get weird noises on the calls on my fritz as well, using it with 2talk. Never had any phantom calls however.

Richard rich.ms

maverick

3594 posts

Uber Geek

Trusted

WorldxChange

#829688 2-Jun-2013 16:22

Leaving port 5060 open to the world is asking for trouble locking it to the provider primary and secondary proxies is the only real way to deploy, I agree with SBiddle on the SIP stack as it has quite a few issues that we found so one off the main reasons we never looked to hard at this box a few years ago when we tested it, pretty good router but much better SIP stacks around and when providing Voice services pretty critical.

Yes I am a employee of WxC (My Profile) ... but I do have my own opinions as well

https://www.facebook.com/wxccommunications

maverick

3594 posts

Uber Geek

Trusted

WorldxChange

#829690 2-Jun-2013 16:26

Forgot to add , it will be incredibly easy to tell if this is the issue or not, SNAP will have the call records for those Call timings if the calls originated from their network , if they don't then the calls are being generated from the Internet to your device directly because they have found your open device on port 5060 as its wide open to the whole world, be prepared for this to be an ongoing issue if this is the case.

Yes I am a employee of WxC (My Profile) ... but I do have my own opinions as well

https://www.facebook.com/wxccommunications

1 | 2