3G Router for VOIP

WireFree, i am in Pretoria, sinoville , make use of my own sip server. I do offer free sip accounts at http://www.rapidaccess.co.za/Services.html You can create a free account, or download our Sip client which will auto
create the account. Just make sure you run the application as Administrator as i write information into the registry.
 
TSpeed said:
WireFree, i am in Pretoria, sinoville , make use of my own sip server. I do offer free sip accounts at http://www.rapidaccess.co.za/Services.html You can create a free account, or download our Sip client which will auto
create the account. Just make sure you run the application as Administrator as i write information into the registry.
Click to expand...

I've registered on your website.
On my office LAN I get "Got 404 Not found on SIP register". Anyway, this suggests that I received a response from your SIP server for a REGISTER.

On Vodacom, I get no response back!

I assume your phone works in Pretoria because you are probably breaking out on a different NAT router/firewall.

WireFree
 
WireFree, i suspect you used your username to log in and not your user id <314> therefore the 404 message, remember password is case sensitive, must be exactly the same as when account was created, anyhow i think your problem lies with VC APN, you have to apply for unrestricted APN at Vodacom.
 
TSpeed said:
you have to apply for unrestricted APN at Vodacom.
Click to expand...

As I mentioned earlier the risk with the unrestricted APN is that anyone on the public Internet can send arbitrary traffic to your IP address and you get billed for it. Someone on the Internet can just send packets continuously to the IP range assigned to the unrestricted APN and either cause you to get a HUGE bill on your contract SIM at the end of the month or deplete the data bundle/airtime on your pre-paid SIM (a form of DoS). Even if you don't respond to strange out of the blue packets from the Internet, Vodacom still bills you for it.

The unrestricted APN would work best on an uncapped billing model, or speed based billing model.
 
Unless you are updating DNS and making your IP address public, i doubt that you will ever get a DoS attack. a DoS attack normally
targets installations running a type of service like WEB Hosting or Voip service. So i would say it is rather safe to apply for unrestricted APN of you only running a VOIP client.
 
Hi gmza and Peon,

I emailed someone I know at Vodacom on Saturday night, around the same time I posted the message above on the broken SIP ALG. I had someone else email and call me yesterday and he made a trace on their network while I generated some SIP messages. He made some changes last night and now my SIP client registers correctly and calls are fine. Is it okay on your side now?

I also logged a call with Vodacom Customer Care (082155) around 6pm on Saturday. I got a call yesterday morning from Customer Care telling me the ports were deliberately blocked for security and to protect the integrity of the network. They recommended I use the unrestricted APN. It is obvious that Customer Care was B***S******* as the SIP does occasionally escape on 5060 and works trouble free on another port. The security/integrity excuse and use the unrestricted APN is in Customer Care's standard list of work arounds as the fault is too difficult for them to comprehend.

Anyway, Enjoy!
WireFree
 
Hi WireFree

I've just connected up a Nokia E51 on a Vodacom (regular internet apn) SIM and done some testing.

- The SIP ALG is still present (IP = 41.13.0.98:5060, reg contact = sip:[email protected])
- The SIP ALG is still broken; it registers, however, within a short space of time the peer is "UNREACHABLE" and therefore unable to receive calls
- Using a different port does bypass the ALG (IP = 41.13.0.98:1024, contact = sip:[email protected])
- Using a different port, the phone both registers and can make and receive calls perfectly

Henceforth, what I'll be doing is making an additional port number available to all of my clients (over and above 5060) and will advise those on Vodacom to use the alternate port.

I have not tried the unrestricted APN at all; at this stage it seems unnecessary as we have a simple workaround that functions on the restricted APN (for the moment at least).
 
Hi gmza,

Would you be able to provide me with a SIP trace and then I'll see if I can replicate it with the Vodacom guys?

I've had a SIP client on the Vodacom network for a few minutes now with no issues. How long before it comes unreachable?

Best Regards,
Amish
 
Last edited:
gmza, can i suggest you maybe change the timeout to 600 , that is every 5 minutes it will reregister, or if you have a sip keep-alive to activate it, this will send an empty packet to your service provider every minute and thus keep the port open.
 
gmza said:
It times out after a few seconds ... perhaps 2 or 3 seconds.
Click to expand...

Sounds, like something is still broken. I assume you are using the E51 mentioned in the previous post. Can you possibly run asterisk on a laptop, and do a tcpdump/wireshark capture on the laptop and your SIP server and tell me where is breaks.

WireFree
 
You must log in or register to reply here.
Back
Top
Sign up to the MyBroadband newsletter
X