Off topic but cool tech. One of the defunct Asterisk Appliance's was based on the Altix 350.
http://www.sgi.com/products/servers/altix/numalink.html On Wed, Aug 10, 2011 at 12:12 AM, Steve Totaro <stot...@totarotechnologies.com> wrote: > I do love this stuff. Being self taught, Asterisk actually made me > learn LAMP from the command line. I was a pure Windows and Cisco guy, > all self taught since the VIC20 and Commodore 64, I taught myself > BASIC. > > Anyways, just like anything you need to define the job before you > attempt to choose the proper tool(s). > > Just a quick correction to number 5, Hylafax is a very powerful fax > app, IAXmodem is just a bit of glue. It has error correction and > other features that help in TX/RX faxes successfully. Asterisk is not > the endpoint. > > It has been in dev since the early 90s, starting with SGI and their > IRIX servers. (I love SGI and the Cray Numalink) > > http://en.wikipedia.org/wiki/HylaFAX > > On Tue, Aug 9, 2011 at 10:31 PM, C F <shma...@gmail.com> wrote: >> Guys in my opinion this thread has been very productive. Which proves >> one thing, as many people you are going to ask about faxing with >> asterisk that many opinions you are going to get (maybe even add +1 >> opinions :P). >> In the end it depends on your experience, hence I asked the OP to try >> for himself. >> Faxing is one of those things that for everyone something else works. >> What works for you might and might not work for someone else. >> To sum it up: >> 1. Faxing doesn't like lost packets. >> 2. That said, T.38 "could" work >> 3. Pure TDM (and by that I don't mean the literal definition of TDM >> but POTS as well) is still the best. >> 4. Running that TDM thru asterisk is again open to different >> experiences among users. >> 5. Using Asterisk as a fax endpoint (hylafax, app_fax take your pick) >> should work in most cases if the handoff to asterisk is TDM and could >> work if it's T.38 >> >> >> >> On Tue, Aug 9, 2011 at 9:28 PM, Steve Totaro >> <stot...@asteriskhelpdesk.com> wrote: >>> On Tue, Aug 9, 2011 at 8:31 PM, Lee Howard <fax...@howardsilvan.com> wrote: >>>> Steve Totaro wrote: >>>>> >>>>> On Tue, Aug 9, 2011 at 7:22 PM, Lee Howard <fax...@howardsilvan.com> >>>>> wrote: >>>>> >>>>>> >>>>>> Ryan McGuire wrote: >>>>>> >>>>>>> >>>>>>> Unless your network is under load and you are seeing dropped packets >>>>>>> and high jitter, I would absolutely not do T.38. The cheapest and >>>>>>> easiest approach that I have found is to buy yourself an FXS gateway >>>>>>> and just make sure you are using ulaw. >>>>>>> >>>>>> >>>>>> As SIP is usually running over UDP/IP it doesn't take much to produce >>>>>> dropped packets. Dropped packets mean lost audio which means lost data >>>>>> and >>>>>> possible demodulation difficulties for the modems. If you're in an >>>>>> environment where dropped UDP packets don't occur you're in a very rare >>>>>> scenario. >>>>>> >>>>> >>>>> I suppose you are talking about from the provider and not on the LAN? >>>>> >>>> >>>> You certainly can (and usually will) have UDP packet loss on an >>>> uncontrolled >>>> LAN. >>> >>> Then you should be fired for not controlling your LAN. >>> >>>> >>>>> At Equinix in Ashburn VA, I have never had a dropped packet via the >>>>> crossconnect from our cage to Level3's cage. Sub ms pings. Putting >>>>> the primary PBX in Equinix and a 100meg speed for all VoIP calls in >>>>> our out. 100meg DIA and 100meg layer 2 fiber to corporate. >>>> >>>> I have no reason to doubt your claims, but if this is true, then your >>>> arrangement there clearly mitigates the likelihood of UDP packet loss. >>>> Nevertheless, this arrangement is not something that the typical user who >>>> asks "how do I fax over SIP/VoIP" is going to have. Without being very >>>> clear about the environment and explaining the pitfalls of not following >>>> your example exactly, you're not doing them any favors by encouraging them >>>> to attempt it in their environment. >>> >>> I don't care what you doubt or not. I engineered it, Got the >>> contracts signed, provisioned, setup BGP, got all that cleared with >>> the steering committee. >>> >>> I do not assume anything about anyone and cannot define a typical >>> user. That is making as ass out of you and me. >>> >>> I encourage everyone to attempt and test everything! Not put it in >>> production without some reasonable testing. >>> >>>> >>>> For every one user who I've ever heard from saying that they have reliable >>>> G.711 faxing over their SIP channels I've heard from a dozen who don't. >>> >>> Roger That. That is why I advise clients it is not the best way to go. >>> >>>> >>>> Thanks, >>>> >>>> Lee. >>> >>> He came in giving no details about his setup. Now I see it is 1000 phones. >>> >>> I guess you don't care to read threads, and like to jump in the middle >>> not knowing what you are talking about. >>> >>> I said that there is really no good way to handle faxes with Asterisk >>> except with a T1, IAXmodem, and Hylafax. >>> >>> I bought fax for Asterisk when migrating to an all SIP world and it >>> was a dismal failure and Digium didn't even have anyone that could >>> explain any of the stats or problems I had. I paid for it so I didn't >>> have to screw around and finally I just took a refund and a big dent >>> as far as the companies opinion of me. >>> >>> I wanted to try the 1.2 asterisk fork and that other project that came >>> from the fact that Asterisk has deadlock issues and a whole cross >>> platform rewrite has been done. >>> >>> Thanks, >>> Steve Totaro >>> >>> -- >>> _____________________________________________________________________ >>> -- 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 >> > -- _____________________________________________________________________ -- 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