[Asterisk-Users] Re: FXO to IAX on ethernet. or FXO to SIP on Ethernet
Checkout http://www.mediatrix.com (FXO device 1204) or http://www.multitech.com. I have been looking into this myself. It appears that Nortel has an arrangement with Mediatrix and uses these devices where a remote FXO is needed that would be cost prohibitive to put in a full chassis. Avaya appears to have the same type of arrangement with Avaya where a G700 chassis is overkill. On both fronts I am *assuming* the quality and echo can is excellent if these two players are endorsing this solution. However, they are not in the price range of the products most of us have been using for FXO interfaces on this list. They may not also have the feature versatility we would like in a SOHO environment as their primary market will focus on quality but with dedicated purpose. The Mediatrix is a 4 port FXO only. MultiTech offer more units in different port counts, but each port appears to have flexible config options (FXO/FXS/EM, etc.) which adds significantly to the price. Mediatrix is list price 650.USD and the 2 port MultiTech looks to be 900. USD list. dbc. -- David Cook Quoting [EMAIL PROTECTED]: I want to in remote locations were we need to have single or 2 PSTN lines for in dial as little hardware as possible and as stable as possible so that they will operate without user intervention. What I want to do is be able to take a single PSTN line in and go out through adsl for the Inet link. These would be in VERY remote locations like smaller towns so they would need to be simple, stable and require little to no user intervention after they are installed. Does anyone know of any hardware that will do this or a way that this could be done or ?? Thanks David ___ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Re: FXO to IAX on ethernet. or FXO to SIP on Ethernet
Checkout http://www.mediatrix.com (FXO device 1204) or http://www.multitech.com. I have been looking into this myself. It appears that Nortel has an arrangement with Mediatrix and uses these devices where a remote FXO is needed that would be cost prohibitive to put in a full chassis. Avaya appears to have the same type of arrangement with Avaya where a G700 chassis is overkill. On both fronts I am *assuming* the quality and echo can is excellent if these two players are endorsing this solution. However, they are not in the price range of the products most of us have been using for FXO interfaces on this list. They may not also have the feature versatility we would like in a SOHO environment as their primary market will focus on quality but with dedicated purpose. The Mediatrix is a 4 port FXO only. MultiTech offer more units in different port counts, but each port appears to have flexible config options (FXO/FXS/EM, etc.) which adds significantly to the price. Mediatrix is list price 650.USD and the 2 port MultiTech looks to be 900. USD list. Unless Mediatrix has dramatically changed the 1204, be carefull with it. I tried to deploy one about nine months ago, and got it to work, but the config was very none standard even with the latest firmware. The 1204 did not have any form of 'register' support, no security (snmp is the only way to configure the box using the public community string and no way to change or protect it), and was no where near sip rfc compliant. It had excellent echo suppression, etc. However, given the changes that have been occuring with asterisk code, there is a very high probability interaction with the 1204 would fail, and Mediatrix offers no upgrade support other then 'pay as you go' for each firmware release. Support is only offered through their resellers, and the majority of those are traditional pbx dealers that start with what is asterisk? The 1204 was specifically designed to interoperate with the 1104 as a toll-bypass combination that happened to use sip. If Mediatrix would take rfc compliance seriously, it would make a very nice 4-port fxo, although it is still a little pricey. Rich ___ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
[Asterisk-Users] Re: FXO to IAX on ethernet. or FXO to SIP on Ethernet
There are two different approaches available: 1. Hardware What you want is a remote SIP gateway. These are boxes which have FXS/FXO/EM ports in some combination on one side and and an ethernet port on the other. Most of these boxes were originally designed to run H.323 and had SIP firmware added at a later stage. An example is http://www.ovislink.com.tw/voip400.htm. Ovislink have 4 and 8 port units. Each takes a 4-port (or two 4-port units for the 8 port model) adapters. These can be either four FXS or four FXO or four EM adapters. Ovislink also have a 2-port model http://www.ovislink.com.tw/voip220rs.htm which seems to have better SIP support. These boxes were originally designed to run H.323. Since SIP has become popular Ovislink added a SIP frontend component to their firmware. This has the effect that you have to configure *both* the H.323 component *and* the SIP component to get the box going. It does work, but it can be a pain to configure (try reading the fairly comprhensive manual two or three time and then having two or three goes at it before it all works). Read the user manual (http://www.ovislinkcorp.com/Manuals/VoIP800-400%20manual.pdf), the separate SIP guide (http://www.ovislinkcorp.com/Manuals/SIP_Guide.pdf) and the VOIP command reference (http://www.ovislinkcorp.com/Manuals/VoIPReference.pdf) to figure out whether they do what you want. These boxes can be rediculously cheap on occasion. I've seen new Ovislink 8-port gateways on eBay for US$200-300 form time to time. Otherwise, I believe that they have distributors in the US/Europe/Australia. The main problem with using the Ovislink gateways is making sure that they have the correct approvals. For instance I found that I couldn't use one here in Australia because they lack A-tick approval (and I'm not about to spend the $50K needed to get them tested). They *appear* to have FCC and CE approval, but they would not be the first manufacturer to print approval numbers on the case when the approvals did not actually exist. I'd check before I'd use one - using non type-approved equipment can attract very large fines. In general, these boxes are reasonably reliable, or at least reliable as say an ADSL modem/router. If the location was really remote you could place a second box at the loaction and a PSTN switch to switch the lines. Hopefully there would be someone on the premises who could unplug the PSTN line from box-A and connect them to box-B if necessary. 2. Telco/Service Provider I don't use the Ovislink box myself, although I did evaluate them. After I hit the lack of approvals roadblock I mention above, I took a very different and much simpler approach. I found a telco who would do call collection for me. They had Cisco routers in each telephone district in Australia. Incoming calls on my numbers were sent to their routers which sent them directly to my gateway. Now admittedly this was for a much larger application than you are talking about (60 lines - actually telephone numbers) are involved. The biggest problem was that the telco would only deliver the calls using H.323 (since most business PABX's use H.323 rather than SIP), so I had to build a H.32-to-SIP gateway using asterisk (which was a pain to get going - asterisk's H.323 support is ideosyncratic). On one hand the telco approach was cheaper (a monthly charge rather than having to buy and house a number of routers). On the other hand it is an ongoing charge. From memory, the hardware cost represented about 30-40 months of telco charges. The compelling reasons for choosing the telco approach are (a) simplicity - its a lot simpler to have one gateway rather than a number of different PSTN gateways in remote locations; (b) reliability - the telco has around $175M is Cisco kit, if something breaks they have a redundent backup standing by. I hope this gives you a few pointers. regards Matthew Date: Fri, 31 Dec 2004 18:22:03 +1100 From: David Uzzell [EMAIL PROTECTED] Subject: [Asterisk-Users] FXO to IAX on ethernet. or FXO to SIP on Ethernet To: Asterisk Users Mailing List - Non-Commercial Discussion asterisk-users@lists.digium.com Now I have searched around and not seen anything to do this. I want to in remote locations were we need to have single or 2 PSTN lines for in dial as little hardware as possible and as stable as possible so that they will operate without user intervention. What I want to do is be able to take a single PSTN line in and go out through adsl for the Inet link. These would be in VERY remote locations like smaller towns so they would need to be simple, stable and require little to no user intervention after they are installed. Does anyone know of any hardware that will do this or a way that this could be done or ?? ___ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To
