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Unread 11-12-2006, 03:50 AM   #8
DracoFelis
 
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Default Work around for the FWD "feature" that is causing this problem.

Quote:
Originally Posted by martin View Post
As there are so many FWD registrations occuring from the VoXaLot servers, it appears that FWD are returning a "600 too many messages " error code for some of those registrations.
If you look on the FWD forums, you will discover that this is a "feature" of FWD, that FWD deliberately put in place to prevent DOS attacks and/or mis-configured SIP clients from taking FWD down! Specifically FWD will automatically "blacklist", and REJECT any registration request, from any IP address that tries to register more than 40 times per minute!!!.

Now, the way this effects VoXaLot, is that all FWD "registrations", for ALL VoXaLot users (not just a single user), come from the same (VoXaLot) server, and therefore the same IP address. As a result, it's very easy (almost a given) that VoXaLot exceeds the 40 registrations per minute that FWD allows, and thereby gets "black listed" by FWD, because VoXaLot has so many users that also use FWD.

To prevent this problem, I propose that people do NOT use the VoXaLot (provider) "register" option with FWD. Instead, you can get full FWD support, by doing the following:

1) For outbound calls, either add FWD as a provider WITHOUT the "register" option, or (alternatively) just use the *393 (SIP Broker dialing) syntax to call FWD numbers without even including FWD as one of your providers.

2) If you want your FWD number to "ring" your VoXaLot account, do NOT try doing a "register" of FWD in the VoXaLot providers section (because of the problem, listed above). Instead, log into your FWD account, and enable the FWD "Permanent Forwarding" feature under the "Extra Features" tab (on the FWD user portal). The address you will want to tell FWD to "forward" to is:
sip:123456@voxalot.com
(where 123456 is replaced with whatever your 6 digit VoXaLot number is)

NOTE: Sometimes it takes a day or two for FWD staff to actually turn on the forwarding, after you make that web portal change, so be a little patient for this to kick in. If it still doesn't work in a couple of days, post a help request on the FWD forums (so someone at FWD can look into where the hold up is).

If you do those two things (unregistered FWD for outbound, and FWD forwarding for inbound calls), you will have full access to FWD (from VoXaLot) without the need to tell VoXaLot to "register" with FWD (and therefore without having FWD continue to "blacklist" VoXaLot for trying to "register" too often)!!!
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