Specifications

Revision: 2008-02-07 4-1
4 Watson TDM Regenerator
4.1 Operating modes
The Watson TDM regenerator has four DSL interfaces. It can be used either as
one regenerator for a two-pair system or as a dual regenerator for two independ-
ent 1-pair systems. No configuration is needed to select the operating mode. In
fact the only configuration command possible on the regenerator is activation and
deactivation of the DSL Autorestart, see 8. All other DSL parameters are defined
by the DSL master settings.
4.2 Interface Designation
The regenerator interfaces are named according to the standard [10]: the link to-
wards the LTU is called R-Side (REG-R) because it has the role of a DSL STU-R.
The link towards the NTU is called C-Side as it has the role of a DSL STU-C:
LTU Regenerator NTU
C - side
(STU-C)
R - side
(STU-R
R - Side
(REG-R)
C - Side
(REG-C)
Loop A
Loop B
Loop A
Loop B
Figure 4-1: Regenerator Interface Designation