ISP Blocking SIP Over UDP

hello,
i want to use VoipUser Inbound / Outbound Services
but i'm no able to register to VoIpUser.Org
i tryed the pre configured SipX Softphone but is not working
my ISP is blocking Sip over UDP bicose Sip over TCP is working using
http://www.iptel.org/
the problem is no related to the Sip 5060 port but to Sip Messages
please do your server support Sip over TCP or TLS?
otherwise, any other solution?

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please do your server support Sip over TCP or TLS?

We don't I'm afraid.

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otherwise, any other solution?

Change ISP !

hello,
now i'm registered and is working!
please any IVR or billing services to try it out?
please cool you give me any tutorial to use VoIpUser SIP acount with my freeswitch?
thank you for your services!

dean :

Quote: please do your server support Sip over TCP or TLS? We don't I'm afraid.

Is this still the case? SIP signalling over TCP is really useful for SIPDroid!

http://code.google.com/p/sipdroid/wiki/ ... yTechnique

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Is this still the case?

Yes.

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SIP signalling over TCP is really useful for SIPDroid!

Not really.

A well-designed SIP application is always on and standby techniques are instead handled with a periodic handshake exchange.

What SIPdroid has done is in order to work around an issue in the handset device related to waking up wLAN connectivity. That's an edge issue and a failure of the device.

From the SIPdroid page:-

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We did not change anything to above concept to avoid permanently sending keep alive packets over 3G which would have caused the radio to stay on most of the time thus totally draining the battery within about 15 hours.

15 hours standby time is pretty good with current mobile VoIP technology (which is poor/early days).

Battery life is a much bigger issue than just switching over to TCP signalling. TCP signalling, in itself, is not a final solution to this problem.

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Not really. Without media over TCP it's pretty pointless to be honest.

I'm using Sipdroid to connect to pbxes.org using TCP signalling (pbxes then hooks up with sipgate), because as the Sipdroid developers point out in the link above, battery life is shortened a lot if you use UDP to keep a session open.

So as I understand it, I'm only using TCP to keep the session alive, then using UDP for the actual voice data when a call is made. Have I misunderstood something, or could you elaborate on what you mean?

Sorry, I was editing my original reply while you were replying to it, so we got out of sync

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Have I misunderstood something, or could you elaborate on what you mean?

No, you have understood the concepts perfectly. And you are correct, keep-alive and NAT issues means that TCP signalling helps with the battery life issues caused by constant UDP keep-alive signalling messages.

My point is that is not a final solution. There's more work to be done in this space than that.

While it might help you out in the short-term, I'm more interested in long term final solutions. We couldn't introduce this into VoIP User based on a short-term strategy.

As we're run by an essentially volunteer workforce we have to be quite ruthless in how we prioritise things.

This is not a priority for us as it only represents a very temporary mid-term solution.

Ok, thanks for taking the time to explain it.

Hey guys,

Will the TLS still work when ISP blocks VOIP in country like UAE? I was trying to check on this but really don't know where to start because I am not so expert.

I have been using a VPN router for a while which works well for me in Dubai, so will the VOIP adapter itself also can have such VPN functions that can encrypt everything like what the router does? with my ISP the regular PPTP VPN Doesn't work but this company's VPN router works so well. TLS is new to SIP and is ssl protected, that's why I want to see anything about this, but seems not many ITSP can do TLS signal.

edit by admin to remove promotional URL

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Will the TLS still work when ISP blocks VOIP in country like UAE?

Not necessarily, no.

There may be ways around it, but the simplest is to go to an ISP that doesn't block VoIP and allows its use.