5
7975-A2-GZ41-00
March 1999
Network Configuration
The following figure shows several configurations including a network application
using a 4-port Hotwire 8775 M/SDSL Termination Unit in a central office (CO). In
this configuration, a frame relay switch and a router are connected, through the
termination unit, to partner units supporting a host or router, and frame relay
encapsulated or unframed data. The figure also shows a possible
standalone-to-standalone configuration.
Frame
Relay
Switch
Router
E1 Host
(Frame Relay
Encapsulated
Data)
98-15938
Router
(Frame Relay
Encapsulated
Data)
V.35
V.35
V.35
Router
2.048 Mb
over
SDSL
V.35
V.35
V.35
8775 Termination Unit
in 8600 DSLAM
CO Site
7975
7975
7975
Customer
Premises (CP)
7975
7975
Customer
Premises
NTU
CO Site
LTU
V.35
V.35
Sample M/SDSL Configurations
In a DSLAM-to-standalone configuration:
The devices synchronize without altering factory defaults, since the CO unit
defaults to LTU mode, and the CP unit defaults to NTU mode.
In a standalone-to-standalone configuration:
One unit must be changed to run in LTU mode, since standalone units have
a factory default setting of NTU mode.
In both cases the clocking source may have to be altered depending on network
requirements.
