New enhanced PRI Network modules offer a single integrated 10/100BaseTX port with eight fixed combinations of one and two-port T1/E1 PRI interfaces. The new network modules differ from the original PRI network modules in that they now include a 10/100 Ethernet port and the E1 versions now support balanced and unbalanced modes on the same card. The E1 versions are available factory configured in either mode, with an option to change mode if required.