#4
I've updated to the latest Grandstream firmware and the phone still de-registers, so I think that there are still some issues. Other VoIP service provider registrations, apart from Voipfone, remain solid.

As I would like to understand what is happening, I plan to use Ethereal (when I get time to reconfigure my network to see the packets) to see why the phone deregisters. Grandstream are also interested in this, I believe. Has anyone else done this?

#5
voipfone wrote:Does the update work?
I have used this new firmware version for a few days now - and, although not perfect, the situation is very much improved.

Regards

Jerry

#7
Blimey does this mean that eventually grand-stream are starting to address and fix problems :-)
Regards,

Voipfone Customer Services

iNet Telecoms Ltd (Voipfone)
Sovereign House
227 Marsh Wall
London
E14 9SD
United Kingdom

Registered number: 05168033
Vat Registration Number 858850966

Telephone: 020 7043 5555
Fax: 020 7043 5556

Web: http://www.voipfone.co.uk
Blog: http://www.voipfoneblog.co.uk
Forum: http://www.voipfoneuserforum.co.uk
Twitter: http://www.twitter.com/voipfone

#8
lol lets hope so.
The GXP2000 is beginning to look like a rather nice phone again.
All the graphics problems seem to be a thing of the past too and they have included direct IP calling in the new firmware.
I must admit running the GXP on my asterisk server I have never ever had any of the registration problems others seem to have.

Does anyone know what headset is compatible with the GXP2000?

#9
To be fair this phone and Grandstream are pretty cool. I find it amusing to see voipfone slagging the hardware as it is the only provider to have problems with it. I have voiptalk blueface sipgate setup and never have problems with registering. I will admit the later firmware works much better with voipfone but it has always worked well with others.

Maybe it's not Granstream we should be slagging..........

Voipfone Support wrote:Blimey does this mean that eventually grand-stream are starting to address and fix problems :-)

#10
Grandstream have admited that their previous firmwares had some registration issues and you must also remember that we are not voiptalk blueface or sipgate we offer completely different services and run completely different systems therefore have different requirements and configurations.

In some cases providers have to tweak there services to work with specific hardware products and while some providers are happy to do this the hardware manufacturers don't bother addressing nor fixing the problems

We are not saying that grandstream products are bad but the gxp2000's have been problematic since they were first released and only the factory firmware was available their recent firmware updates have been long overdue
Regards,

Voipfone Customer Services

iNet Telecoms Ltd (Voipfone)
Sovereign House
227 Marsh Wall
London
E14 9SD
United Kingdom

Registered number: 05168033
Vat Registration Number 858850966

Telephone: 020 7043 5555
Fax: 020 7043 5556

Web: http://www.voipfone.co.uk
Blog: http://www.voipfoneblog.co.uk
Forum: http://www.voipfoneuserforum.co.uk
Twitter: http://www.twitter.com/voipfone

#11
Dear Voipfone,

I read your service announcements about phones deregistering.

You said that Grandstream issued a new firmware to cure this problem. I understand that the problem they cured was related to STUN not working when port allocations changed. As we do not use STUN with Voipfone it is not going to cure the problem that GXP2000 has with your service.

I have not seen any evidence that you have investigated the problem from the point of view of a SIP expert. Despite this, you told me that the new Grandstream software would solve my problem after another user told you he thought his problem was solved by the new firmware. There was apparently no analysis carried out by Voipfone to confirm this.

I confirm that the new GXP2000 firmware does not cure the deregistration problem. I have done this by analysing the SIP traffic and shown that exactly the same problem exists after the ugrade as before.

In fact the limit of your argument seems to be that Grandstream phones are "Cheap" and therefore likely to be inferior. You say that the fact that they are producing new firmware is evidence that they have firmware problems. In fact the new firmware has many new features and recent beta updates are largely to allow testers to check the functionality of these features before the new firmware is released. Yes, there have been some bug fixes but nothing I have seen relates to the specific NR problem with Voipfone.

You say that the fact that other phones work fine with Voipfone is evidence that the GXP2000 is broken. I have carried out extensive tests and provided you with evidence that the GXP2000 has a slight difference in registration procedure but still conforms to the SIP specification. Voipfone network appears not to handle properly certain situations where the GXP2000 registration method is used.

If you are serious about solving this problem and you have professional technical staff that understand the SIP protocol then let's have an informed discussion on the subject.

#12
thing wrote: If you are serious about solving this problem and you have professional technical staff that understand the SIP protocol then let's have an informed discussion on the subject.
I suppose I could get annoyed about that remark but, unless you confirm otherwise, I'll take it that you didn't mean it to sound so offensive.

We can't have an extended technical, public, debate about this here for many reasons, some commercial, some legal some because as we don't sell and therefefore formally support the Grandstream, we just plain don't have the time.

But if others here wish to do so that's fine, we read eveything and many posts help us as well as our customers. Just reading here you can see that the new firmware HAS fixed some issues that some users were having. The new firmware has 10 pages of fixes, several of which could affect registration.

Just for the record, I'm a personal fan of what Grandstream are doing - the VoIP world very badly need a well built, low cost telephone and when we are totally happy with it we'll consider adding it to our shop.
Colin Duffy, CEO, Voipfone

#13
Colin,

I'm sorry if that comment sounded offensive. That was not intended. Flame wars don't solve problems.

Just to clarify, there is one particular issue between the GXP2000 and Voipfone which relates to "SIP 403 Forbidden" packets. I HAVE tested the recent firmware update and there is no change in this situation. Other people have not been specific about which NR problem they are having so it's difficult to say what has been solved when they see an improvement.

I assume your legal and commercial reasons prevent you from discussing the possibility of a situation where the network does not confirm to the Sip specification. However, it would be nice to know if you are prepared to investigate it.

We are actually trying to achieve the same objective here, i.e. a reliable VOIP industry with compatibility between devices.

#14
I can confirm that the latest firmware solves my registration problems but I still suffer with droped calls. No other provider does this on my gxp2000. I like the voipfone setup (probably the best around) but I have to make a choice soon as the dropped calls are becoming a problem with customers.

#15
if you are experiencing dropped calls you should report the numbers to support as this would normally be a carrier issue and we would need to get the issue reported and the routes switched
Regards,

Voipfone Customer Services

iNet Telecoms Ltd (Voipfone)
Sovereign House
227 Marsh Wall
London
E14 9SD
United Kingdom

Registered number: 05168033
Vat Registration Number 858850966

Telephone: 020 7043 5555
Fax: 020 7043 5556

Web: http://www.voipfone.co.uk
Blog: http://www.voipfoneblog.co.uk
Forum: http://www.voipfoneuserforum.co.uk
Twitter: http://www.twitter.com/voipfone

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