Is ADSL reliable enough for VOIP?

Anyone with experience in setting up multiple calls between different locations?

It depends on how many user/connection are required & what the intended use is.

In reply to:

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Is ADSL reliable enough for VOIP?

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I've found it so, been using ADSL for my business VOIP for a while now, but that's a max of 4 simultaneous calls. Some info on bandwidth requirements here:-

http://www.voip-info.org/wiki-Bandwidth+consumption

And a couple of testers:-

http://www.testyourvoip.com/

http://myvoipspeed.visualware.com/uk/index.html

Thanks for that info,

How about a reliable SIP registrar, who have you found to be good?

I have 3 at the moment. all have proved reliable.

VoipCheap.com (Free UK & Other Calls, 5p Mobile calls)
Draytel.org (Good tech support) Free Dial In Number
Sipgate (Free Dial In number, have to have UK IP address to register for this)

Thanks, what do you know about reliable setup via router firewall and NAT? I've connected to sipgate ok but about 50% of calls in there is no voice and then next call can work. I believe it is related to NAT?

Please give more information about your setup. WHat router/firewall. Is there a seperate VoIP device? If yes have you forwarded the correct ports, ie for Sipgate ensure 5060 UDP, 5004 UDP, and if using STUN 10000 UDP are forwarded to you VoIP device. If its internal to the router such as with the Draytek 2800VG then you dont need to forward anything. Just set thing up using domain/proxy as sipgate.co.uk, SIP port 5060. then enter your SIP ID and password in the right boxes. If you are behind other NAT devices, such as inside a network, either configure your external IP as your real IP, or configure STUN, for sipgate they have stun.sipgate.co.uk:10000

Hope this helps, without more information i cannot be specific to your problem.
https://secure.sipgate.co.uk/faq/index.php?do=displayCategory&id=258 Is a link to the config help for most common devices and routers.

Edited by the_dragon (Thu 23-Aug-07 06:35:06)