Re: [asterisk-users] Global VoIP Calls?
Or provide both solutions - let the offices call each other via VoIP, but if too laggy, fall-back to VoIP - PSTN... (- VoIP) How can you test for this precall? Cheers. ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- AstriCon 2008 - September 22 - 25 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Global VoIP Calls?
Thanks all for your suggestions. ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- AstriCon 2008 - September 22 - 25 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
[asterisk-users] Global VoIP Calls?
Dear All, What setup would you recommend for making VoIP calls whilst bringing latency down between offices at: * Edinburgh * Kuala Lumpur * Singapore * Tokyo * Seoul * Beijing * San Francisco Some of the Asia offices are 300ms some 200ms. Any advice greatly apreciated. Thanks. ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- AstriCon 2008 - September 22 - 25 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Global VoIP Calls?
On Sat, 23 Aug 2008, Gavin Henry wrote: Dear All, What setup would you recommend for making VoIP calls whilst bringing latency down between offices at: * Edinburgh * Kuala Lumpur * Singapore * Tokyo * Seoul * Beijing * San Francisco Some of the Asia offices are 300ms some 200ms. Any advice greatly apreciated. Probably not the right answer, but ... Find a local ITSP in each country and place all your outgoing calls via them and let them deal with it via the PSTN. Mayby not in the true spirit of VoIP, and not free either, but if it works and you get some good rates, then it might well be worth it. Or provide both solutions - let the offices call each other via VoIP, but if too laggy, fall-back to VoIP - PSTN... (- VoIP) You'll be at the mercy of your local Internet providers and usually, there's not a lot you can do to influence traffic routing - other than pick another ISP - maybe you can find out which ISPs use cable/fibre and which use satellite connections and favour the wired ones... But if you want to keep it VoIP, then what I'd do is get access to a PC in each location and start running traceroutes (use 'mtr' if you can) and work out the best paths - you might find that there are better ways then simply providing 6 IAX trunks at each location - eg. you might find it better to route calls from SF to Seoul via the Tokyo office (ie. use canreinvite=no to force the data path if using SIP or notransfer=yes in IAX with appropriate dial-rules) if SF to Tokyo to Seoul goes via cable, but SF to Seoul goes via satellite... So logon to those 7 asterisk boxes and run 6 mtr's from each to each other site - leave them going for an hour, then analyse the results. (Good luck!) However, you'll still be at the mercy of the ISPs who might change their routing on a day to day basis, depending on what their influences are... But at the end of the day ye canny change the laws o' physics! Gordon (Scottish, so fully licensed to utter that phrase ;-) ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- AstriCon 2008 - September 22 - 25 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Global VoIP Calls?
I agree. You will probably get good ping times between your sites in Asia, but if your thinking about a back hall back to the states this is where your going to have the latency issues crop up. Tommy -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Gordon Henderson Sent: Saturday, August 23, 2008 9:11 AM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [asterisk-users] Global VoIP Calls? On Sat, 23 Aug 2008, Gavin Henry wrote: Dear All, What setup would you recommend for making VoIP calls whilst bringing latency down between offices at: * Edinburgh * Kuala Lumpur * Singapore * Tokyo * Seoul * Beijing * San Francisco Some of the Asia offices are 300ms some 200ms. Any advice greatly apreciated. Probably not the right answer, but ... Find a local ITSP in each country and place all your outgoing calls via them and let them deal with it via the PSTN. Mayby not in the true spirit of VoIP, and not free either, but if it works and you get some good rates, then it might well be worth it. Or provide both solutions - let the offices call each other via VoIP, but if too laggy, fall-back to VoIP - PSTN... (- VoIP) You'll be at the mercy of your local Internet providers and usually, there's not a lot you can do to influence traffic routing - other than pick another ISP - maybe you can find out which ISPs use cable/fibre and which use satellite connections and favour the wired ones... But if you want to keep it VoIP, then what I'd do is get access to a PC in each location and start running traceroutes (use 'mtr' if you can) and work out the best paths - you might find that there are better ways then simply providing 6 IAX trunks at each location - eg. you might find it better to route calls from SF to Seoul via the Tokyo office (ie. use canreinvite=no to force the data path if using SIP or notransfer=yes in IAX with appropriate dial-rules) if SF to Tokyo to Seoul goes via cable, but SF to Seoul goes via satellite... So logon to those 7 asterisk boxes and run 6 mtr's from each to each other site - leave them going for an hour, then analyse the results. (Good luck!) However, you'll still be at the mercy of the ISPs who might change their routing on a day to day basis, depending on what their influences are... But at the end of the day ye canny change the laws o' physics! Gordon (Scottish, so fully licensed to utter that phrase ;-) ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- AstriCon 2008 - September 22 - 25 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- AstriCon 2008 - September 22 - 25 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Global VoIP Calls?
On Saturday 23 August 2008 03:56:15 am Gavin Henry wrote: What setup would you recommend for making VoIP calls whilst bringing latency down between offices at: * Edinburgh * Kuala Lumpur * Singapore * Tokyo * Seoul * Beijing * San Francisco Some of the Asia offices are 300ms some 200ms. Are the calls to be within company offices, or E.164 numbers? Either way, you could set up DUNDi nodes at each location. Have primary peering routes between Edinburgh, San Francisco and Tokyo (or whichever is your least latent Asian peer), for example. Then peer the Asian peers with Tokyo. DUNDi caching will reduce route lookup times. -- Anthony - http://messinet.com - http://messinet.com/~amessina/gallery 8F89 5E72 8DF0 BCF0 10BE 9967 92DC 35DC B001 4A4E signature.asc Description: This is a digitally signed message part. ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- AstriCon 2008 - September 22 - 25 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
