I am not sure if this is what you are saying but the way I understood it is as follows. There is one TE410P with 4 spans. You have two SS7 linksets, each going into 1 span on the card. This takes up 2 spans. The SS7 to ISDN conversion is then performed using libss7. Then you have a crossover cable coming out of the third span and going back into the fourth. This crossover carries the converted ISDN signal. Is this right ? Regards, Christopher From: asterisk-ss7-bounces@xxxxxxxxxxxxxxxx [mailto:asterisk-ss7-bounces at lists.digium.com] On Behalf Of Mark Wilkinson Sent: July 15, 2008 2:31 AM To: asterisk-ss7 at lists.digium.com Subject: Re: Help with libss7 configuration Hi Christopher, I'm not sure I understand your question. What I have set up for testing SS7 is as follows :- SS7 Linkset 1 comes out of TE410P span 1, via a T1/E1 crossover cable into span 2 of the same TE410P to SS7 Linkset 2 Regards Mark. Christopher Srinivasa wrote: How were you able to go from two SS7 linksets into the TE410P E1 card to a single ISDN after conversion on the crossover link? Did you not have traffic congestion problems when going from 2 to 1 ? Unless an SS7 linkset is equivalent to half an E1 ? _____ _______________________________________________ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-ss7 mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-ss7 -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-ss7/attachments/20080716/a420608f/attachment.htm