I currently have a single PRI however we are getting a second PRI, and the provider (qwest) wants to know if our PBX supports GSAS (they say its a redundant d-channel technology but searching on google for GSAS reveals less than nothing). I've set something similar up before on a cisco 5350, where if one of the PRIs fails, all of the calls destined for either PRI will be routed down the one that didn't fail. Basically the 2 PRIs are bonded together, and act as one. During normal operation the calls come down each PRI in a load balanced fashion (IE if I've got 30 calls up, 15 will be on one PRI and 15 on the other). Is there any way to set something similar to this up in Asterisk? Tom
If you have a PRI, many vendors will support sending calls to an alternate destination if the T1 is down. SBC, for example, calls this "enhanced alternte routing." If the T1 fails, call are routed to the destination of your choice at the SS7 switch. Paul pmahler@signate.com --- Tom <tom@technerve.com> wrote:> > > I currently have a single PRI however we are getting a second PRI, and the > provider (qwest) wants to know if our PBX supports GSAS (they say its a > redundant d-channel technology but searching on google for GSAS reveals less > than nothing). I've set something similar up before on a cisco 5350, where > if > one of the PRIs fails, all of the calls destined for either PRI will be > routed > down the one that didn't fail. Basically the 2 PRIs are bonded together, and > act as one. During normal operation the calls come down each PRI in a load > balanced fashion (IE if I've got 30 calls up, 15 will be on one PRI and 15 on > the other). > > Is there any way to set something similar to this up in Asterisk? > Tom > > _______________________________________________ > --Bandwidth and Colocation sponsored by Easynews.com -- > > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users >Paul Mahler pmahler@signate.com www.signate.com
Tom wrote:> > I currently have a single PRI however we are getting a second PRI, and the > provider (qwest) wants to know if our PBX supports GSAS (they say its a > redundant d-channel technology but searching on google for GSAS reveals less > than nothing). I've set something similar up before on a cisco 5350, where if > one of the PRIs fails, all of the calls destined for either PRI will be routed > down the one that didn't fail. Basically the 2 PRIs are bonded together, and > act as one. During normal operation the calls come down each PRI in a load > balanced fashion (IE if I've got 30 calls up, 15 will be on one PRI and 15 on > the other).The term you are looking for is NFAS (Non-Facilities Associated Signaling), and it's fully supported in Asterisk. You can configure your two PRIs as a single trunk group with a primary and backup D-channel, and calls can be handled on both PRIs equally.
On Tue, 11 Oct 2005, Tom wrote:> > > I currently have a single PRI however we are getting a second PRI, and the > provider (qwest) wants to know if our PBX supports GSAS (they say its a > redundant d-channel technology but searching on google for GSAS reveals less > than nothing). I've set something similar up before on a cisco 5350, where if > one of the PRIs fails, all of the calls destined for either PRI will be routed > down the one that didn't fail. Basically the 2 PRIs are bonded together, and > act as one. During normal operation the calls come down each PRI in a load > balanced fashion (IE if I've got 30 calls up, 15 will be on one PRI and 15 on > the other). > > Is there any way to set something similar to this up in Asterisk? > TomThey are probably talking about NFAS. And after looking at the date of this message, it's probably a moot point. But I'm not sure if NFAS is supported under Libpri/Zaptel. I'd suspect that if it is, it might not be widely deployed and/or tested with it. -- Vice President of N2Net, a New Age Consulting Service, Inc. Company http://www.n2net.net Where everything clicks into place! KP-216-121-ST