Filter
Top Products
DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Object Repair Procedures
Page 10-477DIG-LINE (Digital Line)
10
System Technician-Demanded Tests:
Descriptions and Error Codes
Always investigate tests in the order presented in the table below when
inspecting errors in the system. By clearing error codes associated with the
Voice and Control Channel Local Loop Around Test,
for example, you may also
clear errors generated from other tests in the testing sequence.
Digital Terminal Remote Loop Around Test
(#1201)
This test checks the integrity of the connection between the SPE and the
attached Digital Terminal and the ability of the terminal and the associated port to
send and receive data. This test is based, in principal, on procedure 622 used in
system 85 to help isolate digital terminal problems.
A request is presented to the terminal to go into loop back mode. Then data is
sent to the terminal and when received back, checked for consistency. This test
is run as a part of the craft command "test long" procedure. It is not included in
any error recovery strategy and generates no Error Log entries or alarms. To
begin the test, Maintenance will ask Call Processing to make the associated end
point and port “ Maintenance Busy”. This test will succeed if the endpoint is "idle".
If the reserve request fails then the test will abort. If the request succeeds then
the SPE sends a message to loop around both information channels for the
digital terminal. First the primary information (voice, Information Channel 1 or I1)
channel loop back test is run. The test is performed by sending a digital count
from the Tone/Clock circuit pack on the primary information channel time slot and
receiving the same digital count with a general purpose tone detector.
1. D = Destructive; ND = Nondestructive
Order of Investigation
Short Test
Sequence
Long Test
Sequence D/ND
1
Digital Terminal Remote Loop Around Test
(#1201)
XD
Voice and Control Channel Local Loop
Around Test (#13)
XND
Digital Line NPE Crosstalk Test (#9) X ND
Digital Line Electronic Power Feed Test
(#11)
XND
DIG-LINE Station Lamp Updates Test
(#16)
XXND
Station (Digital) Audits Test (#17) X X ND