Lucent Technologies DEFINITY Enterprise Communications Server Release 6 Instructions Manual

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Additional Maintenance Procedures 
Page 6-15 DS1 CPE Loopback Jack (T1 Only) 
6
A problem can exist in 1 or more of the 3 sections. The field technician is 
responsible for finding and correcting problems in the first 2 sections. The DS1 
service provider is responsible for finding and correcting problems in the third 
section. Testing is divided into 3 steps. 
nTest customer premises...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Additional Maintenance Procedures 
Page 6-16 DS1 CPE Loopback Jack (T1 Only) 
6
Figure 6-1. Network Interface at Smart Jack Figure Notes:
1. Span Section 1
2. Span Section 2
3. Span Section 3
4. 120A2 (or later) Integrated 
Channel Service Unit (ICSU)5. RJ-48 to Network Interface (Up to 1000 
Feet) (305 m)
6. Loopback Jack
7. Network Interface Smart Jack
8. Interface Termination or...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Additional Maintenance Procedures 
Page 6-17 DS1 CPE Loopback Jack (T1 Only) 
6
Figure 6-2. Network Interface at Extended Demarcation Point (Smart Jack 
Inaccessible) Figure Notes:
1. Span Section 1
2. Span Section 2
3. Span Section 3
4. 120A2 (or later) Integrated 
Channel Service Unit (ICSU)
5. RJ-48 to Network Interface 
(Up to 1000 Feet) (305 m)6. Loopback Jack
7.“Dumb” Block...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Additional Maintenance Procedures 
Page 6-18 DS1 CPE Loopback Jack (T1 Only) 
6
Figure 6-3. Network Interface at Extended Demarcation Point (Smart Jack 
Accessible) Figure Notes:
1. Span Section 1
2. Span Section 2
3. Span Section 3
4. 120A2 (or later) Integrated 
Channel Service Unit (ICSU)
5. RJ-48 to Network Interface 
(Up to 1000 Feet) (305 m)6.“Dumb” Block (Extended Demarcation)...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Additional Maintenance Procedures 
Page 6-19 DS1 CPE Loopback Jack (T1 Only) 
6
Configurations Without a Smart Jack
When the loopback jack is added to a span that does not contain a Smart Jack, 
the span is divided into 2 sections. See Figure 6-4
 and Figure 6-5.
1. ICSU to the loopback jack.
2. Loopback jack to the Central Office (CO).
Figure 6-4.Network Interface at “Dumb” Block...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Additional Maintenance Procedures 
Page 6-20 DS1 CPE Loopback Jack (T1 Only) 
6
Figure 6-5.Network Interface at “Dumb” Block with Repeater Line to Fiber 
MUX
Section 2 includes the short cable from the loopback jack to the “dumb” block 
demarcation point (part of the loopback jack). This is the only portion o f section 
2 that is part of customer premises wiring but is not covered in...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Additional Maintenance Procedures 
Page 6-21 DS1 CPE Loopback Jack (T1 Only) 
6
A problem can exist in 1 or both of the 2 sections. The field technician is 
responsible for finding and correcting problems in section 1 and the loopback 
cable portion of section 2. The DS1 service provider is responsible for finding 
and correcting problems in the majority of section 2. Testing is...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Additional Maintenance Procedures 
Page 6-22 DS1 CPE Loopback Jack (T1 Only) 
6
Configurations Using Fiber Multiplexers
Use the loopback jack when customer premises DS1 wiring connects to an 
on-site fiber multiplexer (MUX) and allows wiring to the network interface point on 
the MUX to be remotely tested. This requires that ICSUs be used on DS1 wiring 
to the MUX.
Fiber MUXes can take...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Additional Maintenance Procedures 
Page 6-23 Facility Test Calls 
6
Facility Test Calls
The Facility Test Calls feature allows you to use a voice terminal to make test 
calls to specific trunks, time slots, tones, and tone receivers within the system. 
The test call verifies that the accessed component is functioning properly. To use 
this feature, it must be enabled on the Class of...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Additional Maintenance Procedures 
Page 6-24 Facility Test Calls 
6
4. Place a call. If the call does not go through (no ringing is heard) check to 
see if the circuit has been removed or if the trunk is a rotary trunk.
The dial tone heard is coming from the far-end. If the far end has been 
disabled, you will not hear dial tone. However, depending on far-end 
administration, you may...