As far as I know it?s a normal T1 connection, I think most asterisk cards (like Sangoma, Openvox) in the market support software selection between T1 and E1. R From: asterisk-ss7-bounces@xxxxxxxxxxxxxxxx [mailto:asterisk-ss7-bounces at lists.digium.com] On Behalf Of code0071 Sent: Thursday, April 16, 2015 7:38 AM To: asterisk-ss7 at lists.digium.com Subject: Ss7 56k alink setup I will connect to verizon stp using 2 a link. but they require the link via 56k ds0. Is this 4 wire digital dds? Any pci card known working? Thanks advanve -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-ss7/attachments/20150416/478d520a/attachment.html>