Stan, I agree with the comment below, we switched from analog lines to a PRI and it's not always as reliable as some people think. We are in a somewhat rural location and we have outages regularly. 1-4 hour outages every few months are not uncommon for us. Outages of 60 seconds or so are even more common. I'm told this is because the T1 line is running somewhat noisy/dirty and after so many CRC errors the equipment is resetting.
Make sure you negotiate a good SLA so that you can get credit when it does go down! You also have to be careful like mentioned below, if you get 2 PRI's, even from different CLECS, the will normally still come out of the same Central Office and travel side by side on the cable. So it's likely if 1 goes down then the other one will also. Summary: It's a good idea to have a few analog lines since they can take a whole lot more abuse than the digital T1 can handle. (Static/Noise doesn't make your call drop!) -----Original Message----- From: Lacy Moore [mailto:[EMAIL PROTECTED] Sent: Friday, September 29, 2006 4:23 AM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [asterisk-users] pstn failback -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 stan ford wrote: > On fonalities web page, i see they offer pstn failback as a feature of their asterisk package. i've also heard before of failing back to a pri line if your t1 voip line fails. my question is. in order to have pstn or pri failback, dont you basically have to have all the equipment there on standby, a PRI line, TDM cards, PRI/T1 cards, a bunch of digital or analong phones. it just seems like a whole lot of hardware to be sitting there waiting for a disaster. unless im just not understanding pstn/pri failback. can someone shed some light? > > also, if you've got a dedicated full t1 line for voice, and have a low amount of users for that t1, is there really to worry about failing back to a pstn? seeing how reliable a t1 is. is anyone out here using full voip telelphony solution only? > Having had our XO connection go down within a week or so of switching to a PRI, I can see how having a fallback would be good. It was down for about 4 hours. However, that was back in May or June and hasn't been down since. I couldn't justify having something on standby for our business. But, our clients can reach us by phone in the office or cell, and we can easily make outgoing calls on our cellphones. Our type of business is not really dependent on absolutely having the phones up 100% of the time. If you do get a fallback, get it from different providers. If your T1 from provider X is down, chances are a PRI from provider X will be following the same path and be down as well. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFFHOX9VVXe/Qmwk9QRArSYAKDJN6Tf/L+L3ruXyXYcAeVbIyMxBwCgi2wM YwcV6yYYJX2cVly2z0dsdZ4= =+Ik2 -----END PGP SIGNATURE----- _______________________________________________ --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