Black Box mm146, User Manual

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66
Troubleshooting Tips
Symptom Probable Cause(s) Solution
Videophone does
not power up:
Indicator LED is
off. No AC power to the
12VDC Power Adapter,
or no DC Power to the
system. If you are using the supplied AC
adapter, check the AC power
supply for 120VAC or 240VAC
as indicated.
If directly powering the unit
from an external DC supply,
check the alternative supply for
proper operation and 10-18
VDC.
When making
calls the unit
reports “Dialing”
but does not
connect. There may be a cable
fault between the unit
and the network hub or
switch. Check the network line by
viewing the LEDs on the
network ports. A green LED
indicates a good network
connection. Try a different cable
and check that the cable is
connected to the ‘Network’ port
if the light is off.
When making
calls the unit
reports “Dialing”
but does not
connect. There is no route to the
other device, or the
firewall may be
blocking the
transmission path
betrween devices. Check the IP configuration. (IP
address, subnet mask, default
gateway).
If calling through a firewall
contact your network
administrator.
Units connects but
no video and/or
audio. A firewall is blocking
the video/audio
streams. Create a DMZ for both
videophones, or unblock the
following ports in the firewall for
calls to/from the videophone.
1720, 5000-5010. Set the UDP
port address to 5000.
Unable to go to
video. Supervisor PIN was not
provided. Contact Black Box Technical
Support for advice.
After connecting
to a remote
system, you are
unable to control
or change the
camera inputs. The Remote Access
menu item has not been
set to ON in the Camera
Video Setup menu. Check the settings in the Camera
Video Setup menu and make sure
Remote Access is ON.