the trouble is from loop 28, is that a working loop? of so is it an ipe? if so, replace the network and/or controller cards.. if not let us know the loop type so we can help.
Message ""aaaa"" received from a Network Card (NT8D04). The possible
messages are: 1. PLL UNLOCK EVENT. The Network card lost synch with the
system clock. 2. MSG FROM SHELF x: XPEC ERROR 0001. This error is
usually self correcting. If may indicate a double timeslot problem or
invalid call teardown. 3. TN READ UNBLOCKED: CNT=x. A number of SSD
were sent to the PS card but not acknowledged. In order to prevent the
locking of the message path, the Network card assumed the message was
received. 4. Any of the following three messages: XNET POLLING FAILURE
ON PORT x RSIG LINK LOST ON PORT #x - REINITIALIZED R71 DISASTER;
CANNOT ALIGN TRANSCEIVERS. These messages indicate that the Controller
is not responding to the Network card polling messages.
Action: 1. a. Ignore if message occur when clocks are switched.
b. If it occurs periodically, switch the clocks.
c. If it occurs often, replace Network card or clocks. Random XMI000
messages may be generated if excessive Electrostatic Discharges (ESD)
are allowed to enter the system. These messages may be safely ignored.
Refer to General Maintenance Information (553-3001-500) for ESD
2. a If message occurs rarely, ignore it.
b. If it occurs often, replace the Controller.
3. a. If message occurs rarely, ignore it.
b. If it occurs often, replace the PS or Network card.
4. a. Check cabling between Controller and Network.
b. Replace the Controller.
c. Replace the Network. In X11 Release 15 and 16, ""FRw APx SQy TPz""
is output before the text, where ""w"" is the loop number. This data is
not output in X11 Release 17 and later. Messages without text indicate
that the Network or Controller card have requested software download.
post from err xmi000... switch looked it up without the loop 28 trailer..