Ethernet > Electrical Lines Use the Electrical Lines tab to view the E1 links created for the PDH. Item Description Port Displays the card port number. Port Name Displays the port name. Clock Source Displays the clock source. Line Type Displays the line type. The default type for ONS-SC-E3-T3-PW in unframed and for ONS-SC-E1-T1-PW it is framed. Line Coding Displays the line code. The default value for ONS-SC-E3-T3-PW and ONS-SC-E1-T1-PW pluggable is HDB3. Reset Refreshes the values. Help Displays context-sensitive help.