Re: [Asterisk-Users] ISDN Hardware
Have a look at http://www.sirrix.de/content/pages/pci4s0.htm Currently they don't have an english website but in short this card offers 4 Ports (8 Channels) and you are able to define the mode for each channel (PtmP, PtP, TE, NT) on your own. They have asterisk-drivers available (for Kernel 2.4) and what is very interesting about this card is, that if you have ISDN-Telephones in your environment you can connect them not only ti the astersik but when there is a connecten ISDN (internal) -- asterisk -- ISDN (external) then this will happen without asterisk beeing directly involved because these calls are connected through on the hardware without any echo-problems from transcoding the audio. All asterisk features are usable with this card including Fax based on spanDSP. The price is at around EUR 500,- Jui Jeff Lists wrote: I have a test install set up as follows Grandstream 102 Asterisk X100P Adtran Express 3000 --- ISDN line to PSTN Most things I want to do work fine except I do have some intermittent problems with an echo. I am assuming that this is created in the link between the X100P and the Adtran terminal adaptor. I am not sure of the proper terms but on the PSTN side of the Adtran there is one pair of wires which carry two channels. On the interior side of the Adtran there are two pairs of wires which each carry one channel (is this a BRI channel??). In the final install I will be replacing the X100P with some type of ISDN card. I currently have three ISDN pairs which create six lines. I would like to get enough hardware to be able to add one more pair of lines soon. My question is what type of ISDN card do I need? Will this replace the Adtran or plug into it? Since this is all digital is it a safe assumption that my echo problems will be gone? Thanks, Jeff ___ 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 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] ISDN Hardware
On fre, 2005-01-28 at 22:29 -0500, Jeff Lists wrote: ISDN BRIs are delivered differently in different parts of the world. We need more information to help you. This is in the United States The only Asterisk supported ISDN BRI hardware, that works in the states are CAPI based active ISDN cards, like Eicon Diva Server cards. The problem is, that the protocols used in the US are different, from what commonly is used in Europe (EuroISDN / DSS1) Slán leat, Martin List-Petersen Dublin, Eire (contact info on -- http://www.marlow.dk/) ___ 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] ISDN Hardware
I have a test install set up as follows Grandstream 102 Asterisk X100P Adtran Express 3000 --- ISDN line to PSTN Most things I want to do work fine except I do have some intermittent problems with an echo. I am assuming that this is created in the link between the X100P and the Adtran terminal adaptor. I am not sure of the proper terms but on the PSTN side of the Adtran there is one pair of wires which carry two channels. On the interior side of the Adtran there are two pairs of wires which each carry one channel (is this a BRI channel??). In the final install I will be replacing the X100P with some type of ISDN card. I currently have three ISDN pairs which create six lines. I would like to get enough hardware to be able to add one more pair of lines soon. My question is what type of ISDN card do I need? Will this replace the Adtran or plug into it? Since this is all digital is it a safe assumption that my echo problems will be gone? Thanks, Jeff ___ 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] ISDN Hardware
On Fri, 28 Jan 2005, Jeff Lists wrote: I have a test install set up as follows Grandstream 102 Asterisk X100P Adtran Express 3000 --- ISDN line to PSTN Most things I want to do work fine except I do have some intermittent problems with an echo. I am assuming that this is created in the link between the X100P and the Adtran terminal adaptor. Probably, but it could also be far end echo. These are hard to get rid of. I am not sure of the proper terms but on the PSTN side of the Adtran there is one pair of wires which carry two channels. On the interior side of the Adtran there are two pairs of wires which each carry one channel (is this a BRI channel??). A BRI has two voice (or generic data) channels (two B channels) and one signalling channel (the D channel). In the final install I will be replacing the X100P with some type of ISDN card. I currently have three ISDN pairs which create six lines. I would like to get enough hardware to be able to add one more pair of lines soon. My question is what type of ISDN card do I need? ISDN BRIs are delivered differently in different parts of the world. We need more information to help you. Will this replace the Adtran or plug into it? Since this is all digital is it a safe assumption that my echo problems will be gone? You will not *cause* any echo, especially not to the far en customer. The far en customer may still cause an echo which you will hear. The VoIP step to the phone may bring the echo from nice sounding sidetone to nasrt echo. The built in echo canceller may help if this is a problem. Peter ___ 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] ISDN Hardware
ISDN BRIs are delivered differently in different parts of the world. We need more information to help you. This is in the United States ___ 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
