You can just do it in the dialplan without changing an code. Thanks, Steve Totaro http://www.asteriskhelpdesk.com KB3OPB
> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:asterisk-users- > [EMAIL PROTECTED] On Behalf Of Brad Templeton > Sent: Saturday, May 19, 2007 12:22 AM > To: Asterisk Users Mailing List - Non-Commercial Discussion > Subject: Re: [asterisk-users] Dealing with 2 SIP providers > > On Fri, May 11, 2007 at 11:06:35AM -0400, Mike wrote: > > Hi, > > > > I have a question of using 2 SIP providers. Let's say I have provider A > and > > provider B, and I would like my calls to go to A, and then B if A wasn`t > > available > > > What would be really cool, but require special code in the chan_sip > dialer, would be automatic support of multiple providers in a similar > fashion to the way Asterisk can ring two channels and only talk to > the first to answer. > > You can't just do this with outgoing providers, because if you try to > ring two at once, you may very well have the second one go to > a voicemail and thus answer right away (because the first is > ringing) and you would treat that as the success. > > What I have in mind is something like this: > > a) Invite to main provider > b) Await some intermediate response, such as a RINGING code > or some early media > c) If you don't get that after a short timeout (more like 5 seconds) > then INVITE the second provider > d) Upon the receipt of a ringing or early media code from either, > CANCEL the other. > > Now you would have to get your timings right because there could still > be risk of doing something bad, such as a 2nd call going to voice mail > or residual ringing making a call waiting on the recipient. (I don't > know what typical 5ess do with a 2nd call that comes in while still > ringing, anybody known?) > > Anyway, this could be a good course when a provider has known > unreliability. Long timeouts and restarts are very annoying to > users. > _______________________________________________ > --Bandwidth and Colocation provided by Easynews.com -- > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users