Hi All

I have a CTX100 where need to install one more ISDN card, there ARE already have 6 ISDN ports that's 3 Cards. Is there any way of installing another ISDN without getting another system. I heard you can piggy back a card on top of the ISDN card. If so what is the part number for it as I at lost to figure it out.

I am based in Ireland

Thanks Michael

What are the part #'s on the cards you all ready have ?

You must be using ISDN BRI in which case you're using the RBSU cards. The RBSS is the sub-assembly card that attaches to the RBSU.

Thanks you phonemeister will have to try the UK for one of those cards

Just make sure you have enough licenses for the extra lines mate as Tosh have withdrawn licensing for the CTX in the UK. You will probably need to delete the ISDN card to reconfigure it as 4 circuit card.