On 3/22/07, Zhang Weiwu wrote:

On Fri, 2007-03-23 at 10:22 +0800, Zhang Weiwu wrote:

...

I am thinking perhaps it's not difficult to set up some software on the server that do the "routing", e.g. it serve as a call center that both office login to a VOIP software and it connects to the server, the server talk to both sides. This is the fastest solution and it should work. That's only my imagination, I am still searching for such software.

Certainly THIS would work: set up VPN on the server and both office dial into the VPN before they start to use some SIP software. This can solve the problem, but I think it's over complicated.

Besides, I never tried VPN on Linux, only did it on Windows: on windows the downside is once a host has dialed up VPN, local network connection is "hidden" for it, that I can no longer access the hosts in the same office that has not yet dialed in the same VPN. This is not acceptable for us.

If you go with VPN solution you can use openvpn - that way you can setup exactly which IPs you want to route trough the vpn, and then any p2p VOIP software should work. Plenty of them for linux (including GAIM). You can setup Jabber server and use it. servers: http://www.jabber.org/software/servers.shtml, clients: http://www.jabber.org/software/clients.shtml Or you can take a look at http://www.asterisk.org/ -- Svetoslav Milenov (Sunny) Even the most advanced equipment in the hands of the ignorant is just a pile of scrap. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

Sunny wrote:

On 3/22/07, Zhang Weiwu wrote:

...

On Fri, 2007-03-23 at 10:22 +0800, Zhang Weiwu wrote:

...

I am thinking perhaps it's not difficult to set up some software on the server that do the "routing", e.g. it serve as a call center that both office login to a VOIP software and it connects to the server, the server talk to both sides. This is the fastest solution and it should work. That's only my imagination, I am still searching for such software.

Certainly THIS would work: set up VPN on the server and both office dial into the VPN before they start to use some SIP software. This can solve the problem, but I think it's over complicated.

Besides, I never tried VPN on Linux, only did it on Windows: on windows the downside is once a host has dialed up VPN, local network connection is "hidden" for it, that I can no longer access the hosts in the same office that has not yet dialed in the same VPN. This is not acceptable for us.

If you go with VPN solution you can use openvpn - that way you can setup exactly which IPs you want to route trough the vpn, and then any p2p VOIP software should work. Plenty of them for linux (including GAIM). You can setup Jabber server and use it. servers: http://www.jabber.org/software/servers.shtml, clients: http://www.jabber.org/software/clients.shtml

Or you can take a look at http://www.asterisk.org/

For me it seems that the bandwith shortage is the first problem to solve or cope with. If Skype does not work solely because of bad connections to the Skype Network, this is ok and you might try with a peer to peer client for testing, if direct connectivity works better. A quick google showed IHU (I hear you). There is also an rpm for 10.2 on packman. The description says, that it works without using any session protocol. Otherwise, imho, if Skype does not work ok, hardly anything else will do, especially not a SIP connection, not to mention multiple concurrent SIP connections at the same time. With Asterisk you get a superior PBX Solution that handles anything you can imagine. So you might benefit from Asterix in your internal networks at the respective locations, but, sadly, the IAX (Inter Asterix Protocol), from what I saw, does not offer you better bandwith usage than SIP, so Asterix might not be the obvious solution to handly your bandwith issues. kind regards Eberhard -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

Zhang Weiwu wrote:

On Fri, 2007-03-23 at 10:22 +0800, Zhang Weiwu wrote:

...

I am thinking perhaps it's not difficult to set up some software on the server that do the "routing", e.g. it serve as a call center that both office login to a VOIP software and it connects to the server, the server talk to both sides. This is the fastest solution and it should work. That's only my imagination, I am still searching for such software.

Certainly THIS would work: set up VPN on the server and both office dial into the VPN before they start to use some SIP software. This can solve the problem, but I think it's over complicated.

Besides, I never tried VPN on Linux, only did it on Windows: on windows the downside is once a host has dialed up VPN, local network connection is "hidden" for it, that I can no longer access the hosts in the same office that has not yet dialed in the same VPN. This is not acceptable for us.

You used Windows PPTP VPN, which forces the default route through the tunnel. I use OpenVPN, on both Linux and Windows. It works well and does not force the default route. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

Zhang Weiwu wrote:

On Fri, 2007-03-23 at 07:18 -0400, James Knott wrote:

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You used Windows PPTP VPN, which forces the default route through the tunnel. I use OpenVPN, on both Linux and Windows. It works well and does not force the default route.

Ah, enlightened. I should have known the Microsoft stuff wouldn't be as flexible as we need.

Is it ever? After many years of using OS/2 and Linux, whenever I have to use Windows, I feel as though I'm working with one hand tied behind my back. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org