Circuit EWA-0, Line synchronization lost NCP> **** OpenVMS Alpha Operating System V8.3 - BUGCHECK **** ** Bugcheck code = 000003C4: SSRVEXCEPT, Unexpected system service exception ** Crash CPU: 00000000 Primary CPU: 00000000 Node Name: SLAVE ** Supported CPU count: 00000001 ** Active CPUs: 00000000.00000001 ** Current Process: NETACP ** Current PSB ID: 00000001 ** Image Name: DSA0:[SYS0.SYSCOMMON.][SYSEXE]NETACP.EXE;1 *** keyboard not plugged in... Should I attempt this from a conversational boot, or would that not help? Thanks, Mark. On Thu, 15 Sep 2011, hvlems at zonnet.nl wrote: The output of $ mc ncp show circ ewa-0 char will tell you whether it worked: the attribute service must have the value enabled. If that is not the case check: $ mc ncp list circ ewa-0 char The service enabled value must be present and reboot the system to make it effective. You'll see decnet opcom messages only on OPA0 or on a terminal where the command $ REPLY/ENABLE was entered. Hans