We are installing a WAN using 1720 routers and a 128k ISDN leased line. The problem is that the connection on the ISDN line is x21 and the connection on the 1720 is rj45, is there a converter available.
If the isdn is on the rj21-x than all you need to do is install it on a rj45 jack on pins 4 and 5. connect a patch cable to the router from the jack. Jeter@LasVegas.com
Fisher CCNA
Sprint-Data
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