Double internet connection

[Uli]

Does anybody know if a double internet connection is possible?
I got two gprs phones and connected both of them but for some reason the pc would only use the one connection to talk. Is there a way of getting both to work simultaneously? If possible then I would get faster internet at the same price. That would be great!!!

 

[Paul_S]

What you're trying to do is essentially network load balancing and you can't do it without your cellphone provider installing some hardware and software on their side to support it.
The channel bonding on ISDN (2 * 64 kpbs = 128 kbps) uses the same technique but the ISPs need to have the infrastructure to support it and most of them don't.

The other option you have it to set up your routing table so that certain protocols or host addresses are routed via one interface or the other. You'll need to read up about routing in order to do that - it's not that simple to explain.
The reason why all the traffic goes through one connection is because one interface is selected to be the default route. The other one will be ignored until you specifically route traffic through it.
However it will be a very crude form of network load balancing.

 

[!!DV!!]

Paul-S is spot on with the answer. You can route some traffic over the one and some over the other interface. The technical problem why you can't do this is the return traffic, traffic / packets, came for an IP Address and needs to return to the same IP Address.

I offer a server / software solution where the server would check which interface has the lowest letancy and use that interface, but it will not use both interfaces at the same time. There are Adsl router on the market that would handle 2 interfaces.