COMSPHERE 3600 Series Data Service Units
E-6 December 1996 3610-A2-GB46-60
Table E-5
(2 of 4)
Device Health and Status Messages
Message ActionCondition
DSUTst:
test
,
init
The DSU is running a test, initiated from init.
test
is one of the following tests:
BERT — Bit Error Rate Test
BiL — Bilateral Loopback
Dev — Device Test
DL — Digital Loopback
DT — Digital Test
DTE — DTE Loopback
E-E — End-to-End Test
Lamp — Lamp Test
LL — Local Loopback
NetL — Network Loopback
RL — Remote Digital Loopback
TM — Test Mode
init
is one of the following initiators:
DCP — Diagnostic Control Panel
(front panel)
DTE — Data T
erminal Equipment
LPDA — NetView-initiated test
NMS — Network Management System
Ntwk — Network
Remt — Remote DSU
Refer to the
Test Branch
section of Chapter 3
for details regarding each test. Many tests
require no action.
NetL (network loopback) test may appear if the
service provider is testing the line; they should
notify you of the testing. Could also be a
problem with crossed pairs needing repair.
nn.n
EBrdg Indicates the Bridge Rate (
nn.n
) of the active
core (DSU or DBM) when there are no alarms.
The bridge rate is set with the MUX Setup
configuration option.
External Alarm A The DSU detects a positive voltage on Pin 23. Refer to configuration option Ext Leads.
External Alarm B The DSU detects a positive voltage on Pin 19. Refer to configuration option Ext Leads.
Invalid Address A DSU was powered up with an invalid
address. Invalid addresses are:
0
— Reserved for the SDU
192
— Reserved for the broadcast
address
191
— Invalid for a DSU with a DBM
because of the reserved 192
broadcast address
255
— Invalid for a DSU with a DBM
>80 — Addresses greater than 80 are
not valid for DPII protocol
Change the configuration option Network
Address.
MCMPCommunicFail No reply from MCMP circuit card. The DSU
periodically polls the MCMP circuit card for
health and status. When the DSU does not
receive a response, this message appears.
The problem could be temporary while
retraining is in progress. If message continues,
initiate a Device self-test (Devic) from the Test
branch. If failure continues, call your sales or
service representative.
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