Download 116758A1 E1 Loopback Module User Manual

Descriptions
E1 Loopback Module User Manual
Capabilities
E1 Loopback Modules:
•
•
•
Can perform cross-connect and loopback on four independent circuits.
May be intermixed with other TeleMIX network modules.
Can be used as a demarcation point, if –48 Vdc is available.
SYSTEM-LEVEL APPLICATIONS
The E1 Loopback Module may be used at an equal level test point (DSX-1)
on an E1 carrier line. The module performs all normal, manual DSX functions. These illustrations show common applications for the E1 Loopback
Module.
Central Office
E1 Loopback Modules
OTR
HDSL
DS1
O
I
OTR
M
O
I
M
O
I
HDSL
O
I
O
I
O
I
D4 BANK
D4 BANK
Loopback
Loopback
199.6m
(655 ft)
DSX-1
26m
(85 ft)
DSX-1
199.6m
(655 ft)
Customer Site
Demarcation Point
M
O
O I
I
O
199.6m
(655 ft)
I
DS1
CPE
DSX-1
1-2
Telect, Inc.
655’/85’ = MAX. DISTANCES
E1 Loopback
Module
M
O
I
Central
Office
DS1
26m
(85 ft)
O
I
O
I
FOT
199.6m
(655 ft)
FOT
Facility
Loopback
116758
Issue A Rev 1