[asterisk-users] Sip Node w/ 4 wire audio AT command set call supervision
I have several discontinued Sierra Wireless MP775 mobile GSM/EDGE radio modems. These devices were originally installed in emergency vehicles to provide data and voice access along with GPS reporting. They have external RF connections for GSM/EDGE and GPS signals. The baseband side includes four wire audio, RS-232 serial, USB and some parallel digital I/O for panic switches etc. GSM voice connections are established by sending AT commands via the RS-232 serial or USB ports and utilizing a handset connected to the four-wire audio jack. Here is a link to the Sierra Wireless web pages for the MP775. http://www.sierrawireless.com/support/mp775.aspx My interest comes in finding an inexpensive way to connect an Asterisk PBX or similar system to the PSTN via GSM when POTS and Internet service isn't available or is too costly to connect. In my case, I'm considering building a house at the end of a long unpopulated stretch of dead end road and the cost of trenching and cabling from the nearest telco POP is prohibitive. I would like to find a way to connect these modems to my network so they appear as a SIP FXS device. This would require a device generating/reading AT commands and passing baseband audio on the front end and SIP emulation on the backend. I'm sure there must be a way to do this with a pc but to minimize power consumption; I would prefer to use something like a small single board computer with a Geode processor. The latter, having multiple RS-232 and audio ports, ought to be capable of handling at least two of the MP775's. Has anyone seen any hardware, software or combination that would allow me to accomplish such an interface? Regards, George ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
[Asterisk-Users] RE: Asterisk-Users digest, Vol 1 #3157 - 11 msgs
Digi-Key has these fuses for $2.21 each. You can check them out at: http://www.digikey.com/scripts/DkSearch/dksus.dll?Detail?Ref=73728Row=46959 Site=US Digi-Key is geared more toward small shipments (repairs, development and short run production) whereas Newark is more interested in large quantity sales. They can be a useful resource for many network telecom projects. Regards, George Bean Puwaba Technologies On Fri, 19 Mar 2004, Jacques Leisy wrote: Sorry for a very stupid question, but I cannot find a supplier anywhere. Where can I buy the 3 Amps GMT fuses for the Adtran's PSU. Car fuse don't seems to fit. What is GTM the abbreviation of On Fri, 19 Mar 2004, Steve Creel wrote: A good question (that I wish had been in the archives when I went looking). You need a 3 amp GMT fuse. Datasheet: http://www.bussmann.com/library/bifs/5008.pdf I bought a couple (and probably overpaid - $3.18 ea) at: http://www.newark.com/NewarkWebCommerce/newark/en_US/support/catalog/produc tDetail.jsp?id=02B3398 I think I saw them somewhere else for alot less, just don't remember where. Good luck, Steve ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
[Asterisk-Users] To snip or not to snip?
- Original Message - From: Don Feuer [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Saturday, March 13, 2004 10:04 PM Subject: [Asterisk-Users] Consultants We would like to look at the feasibility of utilizing * as a network infrastructure for a unified communications platform. We would like a list of consultants that work with * and have either developed a platform which is easily usable in a true telco environment. So far, two of the three responses to Mr. Feuer have included the entire digest containing his post rather than sniping the appropriate message from the digest. What does that say about the computer skills of these consultants? :) Failure to isolate the pertinent information of the message one is responding to seems to be a growing problem on this list. I've seen digests that were composed of 50% repeated extraneous information that should have been sniped prior to messages being sent. Some messages contain five copies of the Digium trailer message! This makes the messages forwarded by Digium more confusing to read and time consuming. Digium has had significant problems handling growing volume of mail passing through its server(s). Failure to snip extraneous message content further overburdens Digium's facilities. Perhaps Digium should add a reminder about sniping to the opening message. Let's all work harder to snip our responses and keep the extraneous message content to a minimum! Regards, George M Bean Puwaba Technologies P.S. I know this is a problem on all lists but periodic reminder on every list is helpful. ___ Asterisk-Users mailing list [EMAIL PROTECTED] 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: Asterisk-Users digest, Vol 1 #2588 - 11 msgs
Message: 5 To: [EMAIL PROTECTED] From: Doug Meredith [EMAIL PROTECTED] Date: Wed, 21 Jan 2004 20:05:19 -0400 Organization: Skyridge Systems Inc. Subject: [Asterisk-Users] Re: What technology could my phone company be using? Reply-To: [EMAIL PROTECTED] Mark Hazlewood [EMAIL PROTECTED] wrote: Sounds like Centrex services, we had it from Telus in Alberta a few years ago. I believe this is used for Centrex. I thought Centrex was basically a CO-hosted PBX. Is it also a local-loop technology? Are there PCI cards or SIP gateway boxes available? You can think of Centrex as a virtual PBX residing within a LEC or CLEC switch. It gives you most of the functionality of an on premise PBX delivered over local loops from the LEC or CLEC switch. This allows three or four digit dialing between extensions and no charges incurred for calls unless the user dials 9 for an outside line. Centrex can use POTS or ISDN desksets or a mixture of both. For instance, individual users can have POTS desksets but a receptionist could have an ISDN deskset to provide programmable keys for multiline answer and transfer. ADSI desksets can also be used to provide this functionality. I assume you are questioning the availability of Centrex compatible hardware for a system that doesn't employ Asterisk, as Centrex would be redundant when connected to Asterisk. Any voice capable PCI modem card can be used to terminate a Centrex POTS loop. ADSI capability may exist, as a Winmodem DSP could be programmed to handle voice and ADSI, but I haven't seen any applicable drivers/software. ISDN Centrex loops can be terminated on a PCI ISDN card and software is available to provide voice functionality. If you want a SIP gateway, you might as well use Asterisk and non-Centrex loops. There is no sense in duplicating PBX functionality and paying the monthly Centrex charges. Regards, George Bean Puwaba Technologies ___ Asterisk-Users mailing list [EMAIL PROTECTED] 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: What technology could my phone company be using?
To: [EMAIL PROTECTED] From: Doug Meredith [EMAIL PROTECTED] Date: Wed, 21 Jan 2004 12:58:35 -0400 Organization: Skyridge Systems Inc. Subject: [Asterisk-Users] What technology could my phone company be using? Reply-To: [EMAIL PROTECTED] I live in New Brunswick Canada. The phone company is Aliant. When you set up business service here, you can go with either analog or digital lines. This isn't a T1 or ISDN. They are talking individual lines direct to handsets that they provide. They offer the digital option with even very small ( 2 - 4) number of lines. What technology could this be? Is there any way to connect such a line to Asterisk? PBX vendors that I have talked to in the past say that we can bring the Aliant digital lines straight into their PBX. We would like to do this with Asterisk, but can't figure out what the technology is. (ever try to get technical info from the phone company?) The end user deskset is most likely a conventional POTS set or an ISDN device. Very, very few LEC's or CLEC's are delivering small business dialtone on alternative technologies. Aliant could be using ISDN for this service. ISDN desksets can be programmed to answer multiple directory numbers and multiple desksets can be bridged across a single ISDN line. The Aliant switch can be programmed to pass calls between desksets and supply set to set intercom services. The best way to determine what technology Aliant is using is to find somebody with the service, get the manufacturer model number off the termination device(s) and do an Internet search. If your search doesn't yield a datasheet that lists the technology employed then post the information to this list. Someone is bound to know something about the hardware and thus the technology employed. As long as Aliant is employing POTS, ISDN, T1/PRI, or E1 technology Asterisk can be connected to the Alliant switch. If by some chance Aliant is using a VOIP technology you may be able to connect Asterisk directly to their system if you can ascertain the necessary parameters. Regards, George Bean Puwaba Technologies ___ Asterisk-Users mailing list [EMAIL PROTECTED] 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: newbie ISDN question
Date: Wed, 14 Jan 2004 15:11:59 +0100 (CET) Subject: Re: [Asterisk-Users] Re: newbie ISDN question From: Klaus-Peter Junghanns [EMAIL PROTECTED] To: [EMAIL PROTECTED] Reply-To: [EMAIL PROTECTED] Currently i am polishing the driver for the hfc-s pci a chipset, which i used in numerous el-cheapo ISDN cards (street price around 30 EUR). This will bring zaptel BRI (and even NT mode) to the home user. :) I have looked at cards using the HFC chipset from several manufacturers but none of them support National ISDN (Q931) signaling. Will your driver support National ISDN for us North American users? Regards, George Bean Puwaba Technologies ___ Asterisk-Users mailing list [EMAIL PROTECTED] 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] Up to 8 lines?
-Original Message- From: [EMAIL PROTECTED] [mailto:asterisk-users- [EMAIL PROTECTED] On Behalf Of WipeOut . Sent: Tuesday, April 01, 2003 4:29 AM To: [EMAIL PROTECTED] Subject: [Asterisk-Users] Up to 8 lines? Hi, I am starting to look at the costs involved in putting a PBX system together using *.. We will be using ISDN lines in the UK, which when installed provide a box on the wall with 2 analog ports and 2 digital ports, so these seem to be the options available to me.. 1. I could use an ISDN board but I have not really read good things on the mailing list about using ISDN boards, and I suspect there could be problems running multiple boards in a system properly, also the ISDN boards are quite expensive.. It would be a shame to waste those nice digital BRI circuits by converting them to analog and then back to digital again for Asterisk. It would be better to leave them digital for better sound quality and to take advantage of the D channel signaling capabilities. You might want to look into the Eicon ISDN BRI server cards. The cards have gotten some good feedback on list and off. They support multiple BRI circuits per card, thus reducing the number of card slots required in your Asterisk box. The cards are CAPI compliant so they will allow you to use channelcapi rather than ISDN4Linux; that should make your Asterisk box much easier to configure, operate and maintain. Here is a link for the Eicon four port BRI card. http://www.eicon.com/worldwide/products/MediaGateways/docs/4BRIFlyer.pdf I believe they used to have a two BRI card that no longer appears on the web site but periodically appears on Ebay. If you purchase the four BRI card and use it until you need to expand, it should command the lion's sure of its original purchase price after you upgrade to PRI. Regards, George Bean Puwaba Technologies ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users
[Asterisk-Users] Brooktrout T1/E1 cards and Asterisk
I have wanted to setup an Asterisk system for several months but have been unable to do so because I lacked the funds for a T1 card to connect my channel bank to the server. Recently, I acquired several Brooktrout T1/E1 interface (PRI-PCI48VC/PRI-PCI64V-C) cards for the PCI bus. According to the Brooktrout web site http://www.brooktrout.com/products/netaccess_pri_pci/specs.html Linux drivers are available for these cards but I dont as yet know if they are open source. Brooktrout makes several references to the software development package that comes with the cards (I only received the hardware) so I think there is a good chance that the drivers are open source. Assuming that I can obtain the Brooktrout Linux drivers and they are open source, can I use these cards with Asterisk or would Asterisk specific drivers be required? Regards, George Bean
