http://cheapcallrate.com/Equipment/Broadband/ISDN/Cheap International Call Rates - Telecommunication Resources Directory http://www.capi.orgCOMMON-ISDN-API: CAPI - the ISDN interfaceWed, 08 Sep 2010 21:23:33 GMThttp://www.netopia.com/support/technotes/hardware/NIR_044.htmlNetopia ISDN router information, Cause Codes or ISDN errors.Wed, 08 Sep 2010 21:23:33 GMThttp://infodeli.3com.com/infodeli/tools/isdn/spt-tips/index.htmSupport tips for 3Com's ISDN products.Wed, 08 Sep 2010 21:23:33 GMThttp://www.sonictelecom.de/index.php?parent=37&sub=yes&idcat=37&lang=2&namesub=StartGerman manufacturer of ISDN routers.Wed, 08 Sep 2010 21:23:33 GMThttp://www.controlware-products.comOffers ISDN backup solutions, video surveillance and fibre optic solutions, training, consultantancy, maintenance and support.Wed, 08 Sep 2010 21:23:33 GMThttp://alumnus.caltech.edu/~dank/isdn/Dan Kegel's ISDN PageWed, 08 Sep 2010 21:23:33 GMThttp://www.mosesele.de/eyesdn/Schicht-1-Monitor am S0-Bus des ISDNWed, 08 Sep 2010 21:23:33 GMThttp://www.ralphb.net/ISDNA technical introduction to ISDN - history, terminology, protocol, references and ISDN book store.Wed, 08 Sep 2010 21:23:33 GMThttp://www.patapsco.co.uk/Products include leased line backup, aggregation, protocol conversion and bandwidth on demand. Designed for commercial users, carriers and PTTs.Wed, 08 Sep 2010 21:23:33 GMThttp://www.mckerracher.org/isdnDesigned to quickly bring a novice up to speed. Includes breakdown of ISDN functionality and networking.Wed, 08 Sep 2010 21:23:33 GMThttp://www.shareisdn.de/Device to share the functions of an ISDN card with other users in a network.Wed, 08 Sep 2010 21:23:33 GMThttp://www.uswest.com/products/data/isdn/isdn_glossary.htmlglossary of terms used by the telco in the ISDN arenaWed, 08 Sep 2010 21:23:33 GMT