Specifications

Chapter 10 - Maintenance Administration Manual (SIP/MGCP Version)
AT-VP504E FXS 80
Solving
General
Operation
Problems
Unit does not operate – All LEDs are OFF
Power is not fed to the unit. Check that:
The power cable is connected to the AC socket.
The power cable is fully inserted into the
AT-VP504E FXS power socket.
Impossible to make a call
If the following happens:
Dial tone present.
Power LED lit.
LAN LED lit.
Network communication is not working. Check that:
The LAN cable network is securely connected to the
AT-VP504E FXS and to the network connector.
You did not connect a cross-over network cable.
Impossible to make a call to a destination
If the following happens:
Dial tone present.
Power LED lit.
Test LED lights up when the phone goes off hook.
LAN LED lit.
Configurable parameters of the AT-VP504E FXS are not set properly.
Refer to this manual for a complete description of the
configurable AT-VP504E FXS parameters.
“Poor line condition” error during a fax transmission
The analog transmission between the fax machine and the
AT-VP504E FXS is flaky, preventing the fax transmission to terminate
properly. This problem is known to occur with some fax machines and
it can also occur with a few fax modems. To remedy the problem:
Set the Input sound level to -6dB. If this still does not
solve the problem, try the +6dB value. See “Setting User
Gain Variables” on page 57 for more details.