Isolating A Problem With Port 1 And Port 2 - PictureTel Concorde 4500 Servicing Manual

TROUBLESHOOTING

Isolating a Problem with Port 1 and Port 2

F Y I
Concorde•4500
with V.35
Concorde•4500
with V.35
4-30
This troubleshooting tip is valid for any type of DCE.
F.Y.I.
If you are having a problem with one of the Concorde¥4500 ports,
and you canÕt determine whether the problem is with the port, the
terminal adapter, or the cable, try the following suggestion.
In the following illustration, Port 1, shown by a broken line, will not
sync up with the terminal adapter.
1. Connect a cable to Port 1 on the Concorde•4500 and Port 1 on the
terminal adapter. Do the same for Port 2.
Port 1
Port 2
Terminal Adapter
2. Try flipping the cables to test Port 2. Use the cable that was
originally connected to Port 1 on the Concorde•4500. Connect the
cable to Port 2 on the Concorde•4500 and Port 1 on the terminal
adapter.
Follow the broken line in the following illustration. The result is
that Port 2 does not sync up with the terminal adapter.
So far, the problem seems to be following along the broken line.
Port 1
Port 2
Terminal Adapter
Port 1
Port 2
Port 1
Port 2
Network
NT1
NT1 Network