ATL Telecom AM2048 - Manual (Page 13)

ATL TELECOM USER GUIDE
AM2048A
23
4.9.2.2 G.703-to X.21/V.35 DCE
Using the “Configuration > User Port” Menu:
1
At the Master, select the ‘Transparent’ timing option.
2 At the Slave there is nothing to select.
Press ‘Return’ to enter the changes.
V35/X.21
DTE
AM2048
Slave
AM2048
Master
Terminal Terminal
V35/X.21
DCE
G.703 G.703
B
V35/X.21
DTE
AM2048
Slave
AM2048
Master
Network or
Terminal
Terminal
V35/X.21
DCE
V35/X.21
DTE
V35/X.21
DCE
B
4
22 ATL TELECOM USER GUIDE
AM2048A
4.9.2 Tandem Section – External Timing
For the following configurations, the modems are connected in series with another
transmission system or equipment that is the source of timing.
4.9.2.1 X.21/V.35 DTE-to X.21/V.35 DCE
In order to recover timing from the network, the plug in module at the master end of the
digital section must be configured as a DTE by unplugging the User Port Module and moving
the links as indicated on the PCB legend. See section 8.
Network
Customer
Terminal
AM2048A AM2048A
G.703/X.21/V.35
1 or 2 copper pairs
Timing
G.703/X.21/V.35/10BaseT/USB
Master Slave
V35/X.21
DTE
AM2048
Slave
AM2048
Master
Terminal Terminal
V35/X.21
DCE
V35/X.21
DCE
V35/X.21
DTE
B
B