Hi,
Anybody have good experience with these cards? Or is there other better cards for trixbox?
I can see that some people have trouble installing them or are these issues been solved in the new releases?
I am thinking of buying the A502 or A503 card. Is it good to buy the version with echo cancellation or do you not need this?
Also are there any advantages in buying a Pci Express vs. normal pci?
Phew, that was a lot questions. Thanks for reading this.
-Tue
The A500 is an excellent card. Or t least now it is. We have a few production servers running them. (UK ISDN 2e)
There were some issues a few months ago with echo cancellation not coming up on the second channel from time to time. Very difficult to diagnose and log and we went through a lot of pain to fix it. Check out this thread...
http://www.trixbox.org/forums/vendor-moderated-forums/sangoma/a50...
Full credit to Sangoma; they fixed the issue and since then we have had no problem whatsoever with the A500's. I guess with some things, you have to be patient! From bitter experience we always buy cards with Echo Cancellation built in, and Sangoma's do the job very well. Where the Sangoma cards (be it PRI, BRI or Analogue) are a little more expensive, we have found their quality and consistency to be pretty much top grade.
When you go for Sangoma, you'll have access to some pretty spot-on support as well, though it's in Canada, so I don't know how that'll sit with you! It's actually quite handy for us, as it gives us the option of getting support out of office hours - very handy when we need to take boxes offline.
I can't imagine there's much technical advantage in PCI-X over PCI-Ex; most of ours are PCI... only one is PCI-X; determined only by the chassis we were using. Some of our installs need an ISDN and analogue card in them and we're beginning to find the HP Proliants we use only have 1 PCI-X slot coupled with two PCI-Ex slots.
Which country are you in?
Hi Chrism
Thanks for your descriptive answer.
I am living in Denmark.
Do you know if there are any country specific things you should be aware of? Are ISDN lines the same in all countrys?
For example we use E1 lines in europe and they use T1 lines in the US right?
When you order the ISDN Lines you should just order them as Point to Point, and it should work?
I agree with Chris, the Sangoma A500 is an excellent card. The easiest ISDN2 card to setup too, having tried just about everything else.
As long as you set your card for european ISDN2, you should be fine. I think we all adhere to the German ISDN2 standard signalling anyway!
Point to point should be configured if you have only 1 device (i.e. 1 card) connected per ISDN2 line. You should also have this setting if you have DDI numbers on the line
Point to multipoint works if you only have a single number on the line, or if you have several ISDN devices/cards connected to the same ISDN linebox
Both point to point and point to multipoint are a configuration of the device/card, not the ISDN2 line.
_________________________________
Andy Thompson
1comms
http://www.1comms.co.uk
sales@1comms.co.uk
Our telecom provider has started (or at least I'm aware of it now) getting us to state PTP or PTmP on their order forms, but, indeed PTP normally serves us as we don't have anything else attached to the ISDN lines.
As Andy said, can't see why your Danish-flavoured ISDN would be much different to the UK or the rest of Europe; even in the event of an issue, you've got some great backup/advice available to you from Sangoma.
Let us know how you get on.
Hi both, thanks for your answers.
I was especially looking for an easy card to setup, as my linux skills are pretty limited.
Regarding the discussion about PTP or PtMP, i have found out afterwards that there is two situations with the same teminology.
When you talk about how many devices you connect to the ISDN box you talk about PTP or PtMP, as 2cancall also states.
But more important the telecom provider can also make the line PTP or PtMP (as chrism2 states). This is done on the telecom exchange. If you have several ISDN2 lines then you are able to bundle them together if you choose PTP. Normally PTP is choosen for PBX and PtMP is choosen for private use or for example video conferencing equipment with several lines.
Very confusing, but i think i am ready to go for it...
-Tue
Copyright © 2011 Fonality
Fonality and trixbox are trademarks of Fonality. Trademark Policy. Privacy Policy.
Asterisk is a trademark of Digium, Inc. Fonality and trixbox are not affiliated with, nor endorsed by Digium, Inc.
Member Since:
2008-06-26