Re: [asterisk-users] Big practical systems
-Original Message- From: asterisk-users-boun...@lists.digium.com [mailto:asterisk-users-boun...@lists.digium.com] On Behalf Of Joel Maslak Sent: Sunday, November 07, 2010 2:56 PM To: Asterisk Users Mailing List - Non-Commercial Discussion Cc: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [asterisk-users] Big practical systems I believe this looks like a standard channel bank. Asterisk generates all audio. Ring and hook status are sent out of band. Dial tones are in-band. Ringback, busy, congestion are in-band audio. I would think a standard T1 card would be fine. That said, I would verify this with the LEC. === Does anyone know if ATT EELs delivered to a CLEC would be PRI, or Robbed bit? Cary Fitch -- _ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Big practical systems
On Mon, Nov 8, 2010 at 7:05 AM, Cary Fitch ca...@usawide.net wrote: Does anyone know if ATT EELs delivered to a CLEC would be PRI, or Robbed bit? It won't be ISDN. It will be some form of RBS. You probably have several choices as to which type of RBS (probably several ESF options, you'll probably pick one of them; you may be able to use SF as well). You should probably work with your LEC to figure out exactly what they will hand off to you. You might make a costly mistake if you don't. -- _ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Big practical systems
On 07/11/2010 19:29, Cary Fitch wrote: I don't want to start the How many calls can Asterisk handle? discussion or How many angels can stand on the point of a pin? discussion either. But can anyone contribute some practical knowledge of systems that take in channel bank T1s or DS3s from far away, and process the calls? I am looking for real world, been there, done that, or check the 'Belchfire Systems GigaFiber 65536' system. Not to start the discussion, but Is there a board that will take a DS3 (672 channels) and a system that will handle the calls, or is that a silly question? Is there an IP box that would take the DS3 and then a system that would handle the calls? My guess would be yes because the actual call load would be far lower than 672 calls. Maybe 100-150 or so simultaneous. Each line/call would have to have absolute caller ID. In other words, PSTN call handling. Cary Hi, Did you saw this before: http://lists.digium.com/pipermail/asterisk-users/2008-April/209146.html ? -- _ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Big practical systems
inline I don't want to start the How many calls can Asterisk handle? discussion or How many angels can stand on the point of a pin? discussion either. You just did But can anyone contribute some practical knowledge of systems that take in channel bank T1s or DS3s from far away, and process the calls? Most of us are far too busy. These things are best learned the hardway. I am looking for real world, been there, done that, or check the 'Belchfire Systems GigaFiber 65536' system. Its called Asterisk. Not to start the discussion, but Is there a board that will take a DS3 (672 channels) and a system that will handle the calls, or is that a silly question? There are many. The primary problem it getting a provider to provide you with a DS3. Is there an IP box that would take the DS3 and then a system that would handle the calls? My guess would be yes because the actual call load would be far lower than 672 calls. Maybe 100-150 or so simultaneous. There are a few solutions here and several expensive chunks of hardware. Do you want to put all your eggs in one basket? Each line/call would have to have absolute caller ID. In other words, PSTN call handling. That is between you and the provider. The technology exists on the wire. Cary Gringo Malvado... -- _ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Big practical systems
I believe this looks like a standard channel bank. Asterisk generates all audio. Ring and hook status are sent out of band. Dial tones are in-band. Ringback, busy, congestion are in-band audio. I would think a standard T1 card would be fine. That said, I would verify this with the LEC. On Nov 7, 2010, at 1:22 PM, Cary Fitch ca...@usawide.net wrote: Alternate question: Asterisk/PSTN oriented. If an Asterisk system were interfaced via a T1 to a local telco loop to a customer premises: (This is not a T1 to the customer premises, but a T1 to the telco who then demuxes it to copper to the customer premises. IE. In Telecom terms an EEL.) Will Asterisk handle that scenario with common drivers and cards? Who generates the customer audio comfort sounds, ringing, busy, etc? Cary I know a lot, but not everything. -- _ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello 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 -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Big practical systems
On Sun, Nov 7, 2010 at 1:29 PM, Cary Fitch ca...@usawide.net wrote: But can anyone contribute some practical knowledge of systems that take in channel bank T1s or DS3s from far away, and process the calls? Yes. Adtran makes excellent gear. The MX 2800 is good for breaking a channelized DS3 into PRIs. Not to start the discussion, but Is there a board that will take a DS3 (672 channels) and a system that will handle the calls, or is that a silly question? If by board, you mean PCI board for shoving in something with an intel cpu, not that I've ever heard. Digium sells 4x port PRI boards, and some competitor sells an 8x port PRI board, but I've never tried any boards not made by Digium. The only thing silly is the idea of trusting that many calls to PC hardware. Is there an IP box that would take the DS3 and then a system that would handle the calls? Yes, embedded hardware from a vendor you've heard of will do that. Cisco makes a 3845 which can terminate about 20 PRIs in one appliance. My guess would be yes because the actual call load would be far lower than 672 calls. Maybe 100-150 or so simultaneous. Well, then it's not really a DS3. If it can't do the whole thing without melting down, it shouldn't advertise itself as DS3. The Adtran gear works rock solid when pushed to the limit. If you're just talking 150 calls, you could do that with two 4x port cards in a single PC. I thought you were talking a lot bigger. Each line/call would have to have absolute caller ID. In other words, PSTN call handling. Ummm, there's no such thing as absolute caller ID. You wanna try that question again? callerID is not legally binding, is not used by billing, anybody can spoof it. The closest you can get is to have a LEC provide ANI. You don't need PRI to get that. You can get that via a quality voip provider, or yourself using your own termination gear to convert into voip. -- _ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Big practical systems
Yes. Adtran makes excellent gear. The MX 2800 is good for breaking a channelized DS3 into PRIs. Thanks, will look at that. Ah, a DS3/T1 mux. I was looking for a DS3 PC Card... it would have 672 channels but the system doesn't need to handle but 20% of them at one time. If you're just talking 150 calls, you could do that with two 4x port cards in a single PC. I thought you were talking a lot bigger. ==I mean DS3 with 672 channel paths. There are 672 subscribers out there. I am saying that only a percentage of them are talking at peak times. We need to supervise 672 lines and expect 15% to talk at the same time. Each line/call would have to have absolute caller ID. In other words, PSTN call handling. Ummm, there's no such thing as absolute caller ID. You wanna try that question again? callerID is not legally binding, is not used by billing, anybody can spoof it. ===I mean we have to provide service and know what line is calling, not just provide anonymous service to a lot of people. We can't just mux a bunch of lines in to the Asterisk box with no identification. Cary -- _ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
