ATL Telecom AM200 - Manual (Page 33)

ATL User Guide
AM200 Modem
33
7
7.3 CROSSING AN SDH NETWORK
Both AM200 sections take their timing from the network and both are configured the same. Use the
configurations shown in sections 7.2.1 or 7.2.3.
Note: The SDH network might be configured to provide a PDH path, in which case see section 7.4
7.4 CROSSING A PDH NETWORK
In this example, a PDH network is shown where timing is passed transparently from end to end in both
directions. From a timing point of view, this is equivalent to connecting Master A directly to Master B. To
provide a Master clock to the system, side A should be set as in section 7.1.1 or 7.1.1.2, otherwise, without
a master clock somewhere in the path, the timing will be unstable.
G.703/X.21/V.35/RS530/100BaseT
Customer
Terminal
AM200A AM200A
G.703
Timing
CO B CPE Customer
Terminal
AM200A AM200A
G.703
Timing
CO A CPE
PDH
Network
G.703/X.21/V.35/RS530/100BaseT
G.703/X.21/V.35/RS530/100BaseT
Customer
Terminal
AM200A AM200A
G.703
Timing
CO CPE
G.703/X.21/V.35/RS530/100BaseT
Customer
Terminal
AM200A AM200A
G.703
Timing
CO CPE
SDH
Network