Hardware manual

Issue 8 Electra Elite
10 - 12 System Maintenance
No Outside Dial Tone Access
Multiline
Terminal or SLT?
SLT
Check for Internal
Dial tone.
Check for Internal
Dial tone.
Internal
Dial Tone?
Internal
Dial Tone?
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
1. Perform Second
Initialization.
2. Reset and test
SLI(4)/(8)-U( ) ETU.
3. Replace and test
SLI(4)/(8)-U( ) ETU.
1. Reset terminal
and test.
2. Replace terminal
OR
3. Reset ESI(8)-U( )
ETU and test.
4. Replace ESI(8)-U( )
and test.
Leave an SLI(4)/(8)-
U( ) and an ESI(8) -
U( ) ETU installed.
Go to Flowchart A1.
All
Terminals
affected?
Check for Internal
Dial tone.
Internal
Dial Tone?
Go to Flowchart
A1.
Test for CO dial
tone at MDF with
test set, and check
CO wiring.
Have Telco
check lines.
1. Check Memory Blocks 4-07, 4-08,
and 4-19 for Station Restriction.
2. Check Memory Block 4-09 for
Telephone to Tenant Assignment.
Check SW 1~8 on COI(8)-U( )
ETU for proper switch setting.
Check conduit and frame ground
to system for ground start trunks.
CO
Dial Tone?
1. Reset and test; replace COI(8)-U( ) ETU and test. If trouble persists go to 2.
2. Perform Second Initialization. If trouble persists go to 3.
3. Perform First Initialization. If trouble persists go to 4.
4. Replace CPUB( )-U( ) ETU, and test using default program.
C3
Both