ATL Telecom AM2048 - Manual (Page 18)

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telecom USER GUIDE AM768A/AM2048A
18
Issue 8
4.7.1.1.3 X.21/V.35 DCE to X.21/V.35 DCE
The terminals connected to the digital section at both ends are DTEs, a clock inside the ELU then
becomes the reference clock for the entire system.
4.7.1.2 Tandem Section
For the following configurations, the DSLUs are connected in series with another transmission system
or equipment
4.7.1.2.1 G.703 to G.703 Transparent Timing
The timing for each terminal is carried independently across the digital section.
Using the “Configuration > User Port” Menu:
7. At the ELU, select the ‘Transparent’ timing option
8. Using F8, cycle to the NTU user port, select the ‘Transparent’ timing option
9. Press ‘Return’ to enter the changes.
ELU NTU
Terminal 1 Terminal 2
T T
T
DCE DCE
ELU NTU Network
Terminal 2 Terminal 1
ELU NTU
Terminal 1 Terminal 2
T1
T2
T2
T1 Network
T1
T2