Crocus SHDSL G703.pdf - FTP Directory Listing

Crocus SHDSL G703 Chapter 5 73
User manual
Step-by-step configuration
5.4.5 Access to PDH networks
Synchronisation on the same clock
As the 2 Mbps and Nx64 Kbps signals in the PDH networks are synchronized on the 2.048 kHz Primary
Reference Clock, also all access devices must be synchronized on the same clock. This can be done by
applying the network clock to the “station clock” input of the devices or by operating in “external clock”.
Therefore these interfaces are synchronous, allowing transporting clock from one device to another.
Clock signals can be transferred separately from the data signals (e.g. station clock) or can be encoded
in the data, as done in the G.703 interfaces which are typically used to connect to PDH/SDH infrastructures.