Hello everybody! I'm looking into implementing an * solution and I'm expecting to require 4 incoming FXO lines. Based on my reading of the mailing list archives and what I read on the Digium web site, I don't think that this can be achieved with X100P cards as it doesn't seem to be practical to have more than 3 X100P cards at the time (IRQs is the main problem I think). At four FXO ports, I can't quite justify something like a full T1 on a monthly basis. But, since I've never ordered one, I'm thinking that it's a "all or nothing" deal (i.e.: I can't order a T1 and pay for only 4 voice channels). It would seem that the best I can do is a 3x8 configuration according to the information on this page http://www.digium.com/index.php?menu=wildcard_tdm400p I know that ISDN never caught on in the USA, but here (Regina, Saskatchewan, Canada), it is an option which is less expensive than Centrex lines or regular single business lines. Unfortunately, Digium doesn't sell ISDN cards, so I'm left to explore the options on my own. The WIKI page talking about ISDN (http://www.voip-info.org/wiki-zaptelBRI) has a definite European feel to it as most, if not all, the cards mentioned are German. I find that Digium has a bit of a hole in their product line. They provide the required hardware if you need 1-3 FXO lines or if you need 1-4 T1 ports, but nothing in between, which ISDN would fill nicely. They do have a 4 port FXS card. Now all they need is a 4 port FXO card. Better yet, a 4 port ISDN card which would support up to 8 simultaneous calls. One option that I found seems to be an Eicon card, such as the Diva Server 4BRI (http://www.eicon.com/us/products/MediaGateways/DIVA_4BRI_8M.htm). Anybody has any experience with that type of card? Will * support it? It says that it supports Linux: TTY, CAPI 2.0 Application Interface. Thanks all, Francois
Hello Francois, We are using Voicetronix OpenLine4 in Ukriane... it is not perfect but works for us. Of course compare price/quality I think it is not bad option. http://www.voicetronix.com/vpb4_v4pci.htm Regards, Vasyl
> I'm looking into implementing an * solution and I'm expecting to require 4 > incoming FXO lines. Based on my reading of the mailing list archives and > what I read on the Digium web site, I don't think that this can be achieved > with X100P cards as it doesn't seem to be practical to have more than 3 > X100P cards at the time (IRQs is the main problem I think). At four FXO > ports, I can't quite justify something like a full T1 on a monthly basis. > But, since I've never ordered one, I'm thinking that it's a "all or nothing" > deal (i.e.: I can't order a T1 and pay for only 4 voice channels). It would > seem that the best I can do is a 3x8 configuration according to the > information on this pageThe Mediatrix 1204 FXO gateway sort of works with asterisk in the US, but have had a few issues with CallerID being recognized when the four pstn lines have different ring cadence (at least I believe its a cadence issue). Other then that, there seems to be a significant market opportunity for anyone that can produce a reliable 4-port device. A goggle search for channel banks turned up www.nextag.com with samples such as this: Adtran TA750 Chassis w/psu ac adapter $900 Adtran Quad FXO card: $230 Adtran TA750 w/12 FXS ports: $1250 Adtran TA750 w/FT1, 20 FXS: $1900 However, I don't consider those prices cost effective for four ports after adding in the digium T1 card, etc. I'm interested in a 4-port as well if anyone knows of something.
> I find that Digium has a bit of a hole in their product line. Theyprovide> the required hardware if you need 1-3 FXO lines or if you need 1-4 T1ports,> but nothing in between, which ISDN would fill nicely. They do have a 4port> FXS card. Now all they need is a 4 port FXO card. Better yet, a 4 port > ISDN card which would support up to 8 simultaneous calls.The other option your missing here is get the t100p card and get a small channel bank (allow 24 channels of analog in fxs/fxo combinatins,) a good used adtran 750 for this would run about 250-350us) this would allow for growth bcus in Canada T1 PRI voice dont usually start to become economically viable untill you need 12-16 lines.. And fractional voice/data T1 in canada are a) hard to come by b) dont start to become viable untill you need 8 voice channels, and 1MB or so of Inet BW
> -------- Original Message -------- > Subject: Re: [Asterisk-Users] Options for 3+ FXO ports > From: "Jorge Mendoza" <mendoza@tcc.com.pe> > Date: Mon, March 08, 2004 8:53 am > To: asterisk-users@lists.digium.com > > Rich Adamson wrote: > >>I'm looking into implementing an * solution and I'm expecting to > require 4 > >>incoming FXO lines. Based on my reading of the mailing list archives > and > >>what I read on the Digium web site, I don't think that this can be > achieved > >>with X100P cards as it doesn't seem to be practical to have more than > 3 > >>X100P cards at the time (IRQs is the main problem I think). At four > FXO > >>ports, I can't quite justify something like a full T1 on a monthly > basis. > >>But, since I've never ordered one, I'm thinking that it's a "all or > nothing" > >>deal (i.e.: I can't order a T1 and pay for only 4 voice channels). > It would > >>seem that the best I can do is a 3x8 configuration according to the > >>information on this page > > > > > > The Mediatrix 1204 FXO gateway sort of works with asterisk in the US, > but > > have had a few issues with CallerID being recognized when the four > pstn > > lines have different ring cadence (at least I believe its a cadence > issue). > > > > Other then that, there seems to be a significant market opportunity > for > > anyone that can produce a reliable 4-port device. > > > > A goggle search for channel banks turned up www.nextag.com with > samples such > > as this: > > Adtran TA750 Chassis w/psu ac adapter $900 > > Adtran Quad FXO card: $230 > > Adtran TA750 w/12 FXS ports: $1250 > > Adtran TA750 w/FT1, 20 FXS: $1900 > > > > However, I don't consider those prices cost effective for four ports > after > > adding in the digium T1 card, etc. > > > > I'm interested in a 4-port as well if anyone knows of something. > > See: http://www.welltech.com.tw/ > > No yet tested, but waiting my first samples next week. Have callerid > and > reversal polarity detection!. Prices seems to be half of Mediatrix. > > JorgeI have been eagerly awaiting word on these devices! They would not give me one on evaluation, and charge a 20% restocking so I have not tried them myself. Please post your findings :-) Michael Graves