Point #1 You can have multiple phone hooked up to one FXS but they will all be the same extension (most homes are wired like this) Point #2 I understand that some FXS cards are multiport so you could have the same number of extensions as are available on the card. You can have more phones, but not more extensions (see Point #1) Point #3 Make sure the cards your using are supported by the OS you're connecting them to Point #4 It's hard to show a proper diagram when you throw in channel banks and the internet and start to show the permutations - the system schematic would mostly look like a spiderweb. I tried to diagram it, but it got way too complicated because there are so many possible combinations (is someone else able to come up with a good diagram ... it would be great for the asterisk docs). One of the tricks is to maintain static IP addresses for the VoIP endpoints or some kind of a mapping system to track dynamic IP addresses. PS - I hope I'm right ... but this is my understanding of the possibilities Stefano Finetti Lynx Automotive srl (ssfinetti at lynxautomotive.it) wrote*:> >From: "Jim Fleming" <JimFleming at ameritech.net> >> >> An FXO card is just a modem card**.... >> FXS is a much more specialized card because it has to ring a phone.... >> >> Start with..... >> Phone===========[wall]======{Phone Company} >> >> Phone=====FXS[Asterisk]FXO===[wall]]======{Phone Company} >> >> Phone===FXS(PC)====LAN=====[Asterisk]FXO===[wall]]======{Phone Company} >> Phone===FXS(PC)====LAN >> IP-Phone===========LAN >> Headset===(PC)=====LAN > >Thanks, seems to be clear now :) > >I Know i'll probably pass as stupid ;-) >According to your scheme, FXS card should be installed on PCs in order to >have an analog phone working with them and making them ring when called? > >Does a Multiple FXS card exists in order to attach more than 1 analog phone >with a single card? >Just to have: > >Phone============FXS[Asterisk]FXO===Phone Company >Phone2===========FXS | >Phonennn=========FXS | >IP-Phone=========LAN===| > >ecc. >Right? > >email: ssfinetti at lynxautomotive.it >tel: 199 79 79 30 >fax: 06 233 227 934 >Linux Registered User #271978 >---- > >_______________________________________________ >Asterisk-Users mailing list >Asterisk-Users at lists.digium.com >http://lists.digium.com/mailman/listinfo/asterisk-users >
----- Original Message ----- From: "Brian Johnson" <bjohnson at jecinc.on.ca>> It's hard to show a proper diagram when you throw in channel banks and the internet > and start to show the permutations - >If you stick to simple SOHO (Small Office Home Office) configurations, and you assume that the user has a Phone and a PC, and you put all of the new hardware in one box, then you may end up with the following. Phone--------[FXS[**Asterisk**]FXO]----[DSL]-_-_-_-_-_-_-_{Phone Company InterNAT} PC========[LAN2 LAN1]====[DSL] The PhoneJack and LineJack have been common FXS and FXO cards (LineJack is both), but, they started as ISA cards and the LineJack was not migrated to PCI. With commodity modem hardware for the FXO interface, that part is solved, and the new PCI PhoneJack can do the FXS function, or multi-port FXS cards can be used. A 4-port FXS card would be able to handle most homes. Only one person could be using the out-going voice phone line, but with VOIP via the DSL, everyone could be talking, browsing, etc. Cost reduction of the [FXS****FXO] box becomes an interesting project as well as inclusion of the DSL modem. There are many permutations there, because the new 2-slot PCI boxes mostly have a TV Out interface, which makes it attractive to have the box double as the TV controller, with DVD and games downloaded. Some people do not like having their phone service tied to their TV. Now that cellular is more common, that is less of an issue. To reduce the cost and the system admin headaches of the [FXS****FXO] box, one can also envision a box with no hard-drive. A subscription CD (or DVD) could be used to boot the box and that could include all of the latest software. Some ISPs envision maintaining their customer base, by having their own CD which expires, that of course requires the moving parts of the spinning disk, and some prefer to reduce the number of moving parts, including fans. http://www.knoppix.com ...there are many permutations and trade-offs...but, at the end of the day, the average user just wants it to work and to provide the service they seek... Jim Fleming http://IPv8.isfun.net