45
APPENDIX D: G.703/G.704 Rear Card Module
Figure D-1. Clocking settings in a network termination application.
D.2.2 N
ETWORK
E
XTENSION
A
PPLICATION
Network extension mode is used to extend nx64 to 2.048-Mbps G.703/G.704
service across a DSL link, providing an nx64 G.703/G.704 link at the remote site.
Transmitter clocking is derived from the G.703/G.704 network and is transmitted
over the baseband line driver link (see Figure D-2).
Figure D-2. Clock settings in a network extension application.
Clock/
Data
Clock/
Data
V.35
Router
Data
Clock/
Data
nx64 kbps
G.703/G.704
Network
Module and
Line Driver
Line Driver with
Serial Interface
Module ME0004C
ME0004C
Cable
Span
V.35
Module
External
Clocking
Receive Recover
Clocking
Clock/
Data
Clock/
Data
Clock/
Data
Clock/
Data
nx64 kbps
G.703/G.704
Network
nx64 kbps
G.703/G.704
Network
Module and
Line Driver
Module and
Line Driver
Module
ME0004C
ME0004C
Cable
Span
Module
External
Clocking
External Clocking
set to force CP
