I'm looking at experimenting with asterisk with an ISDN BRI and ISDN phones (since I have these already). I saw that the Billion card was cheap and could be used in either TE or NT modes. I have the following question which I couldn't answer by reading through the manual. Maybe someone has experience of using this card and can help me out. when using in NT mode does the card require additional power or is it able to supply enough power by itself to the S0 bus? thanks for any help, John
Hello,>when using in NT mode does the card require additional power or is it >able to supply enough power by itself to the S0 bus? >You will need an additional power (for example http://shop.beronet.com/product_info.php/products_id/48). Best regards Blaise
On Friday 12 August 2005 09:43, John Fawcett wrote:> when using in NT mode does the card require additional power or is it > able to supply enough power by itself to the S0 bus?I don't know the exact specifics about the Billion card, but I have a setup where I have an extra NTBA connected to the ISDN card (S0 bus coming from ISDN card into NTBA, cable needs to be crossed) and then my ISDN phones are connected to the S0 bus coming out of the NTBA. I assume that the Billion card works in a similar fashion and doesn't have the necessary power to directly connect phones to it. I hope that this helps you a little.
>> when using in NT mode does the card require additional power or is it >> able to supply enough power by itself to the S0 bus? >> > You will need an additional power (for example > http://shop.beronet.com/product_info.php/products_id/48).This is for the 4xBRI or 8xBRI cards from Beronet. The Billion 1xBRI has net the necessary connectors on it. You will need network terminator (NTBA) a selfmase power supply if the phones on the BRI have no own power supply. Christian
> I'm looking at experimenting with asterisk with an ISDN BRI and ISDN > phones (since I have these already). > > I saw that the Billion card was cheap and could be used in either TE or > NT modes. > > I have the following question which I couldn't answer by reading through > the manual. Maybe someone has experience of using this card and can help > me out. > > when using in NT mode does the card require additional power or is it > able to supply enough power by itself to the S0 bus?The cards feeds no power to the s0. If the phone has its own power supply normally it will work without external power supply. Otherwise you will need a network terminator (NTBA) or a selfmade power injector. Christian