QuadroM-E1/T1 Manual I: Installation Guide
Appendix: Checking the Connections
QuadroM-E1/T1; (SW Version 5.2.x)
53
Basic Tests:
Checking for physical link: no WAN link
Please check the physical connection of the WAN interface. Cable not
plugged or broken?
Test failed.
If you pass the diagnostics successfully, but are still not able to place a call to 899# then
check the SIP registration status.
Open the SIP Registration Status page using the QuadroM-E1/T1 management System
menu item Status. If QuadroM-E1/T1 is placed behind a NAT router, the detected NAT type
and the IP address of this router's WAN port is displayed.
Fig. I-46: SIP Registration Status page
If you are using the STUN functionality the page shown above will additionally display the
Detected Connection Type. Unsupported Connection types will cause one of the following
messages:
•
Unknown connection - unexpected error,
•
Symmetric NAT,
•
Symmetric Firewall,
•
Blocked UDP
If the Detected Connection Type is any of the types listed above, QuadroM-E1/T1 cannot
work behind your router. You must either connect the QuadroM-E1/T1 in front of the router,
or configure NAT traversal manually as explained in
Appendix: Configuring SIP NAT Tra-
versal
.
If you are unable to resolve your problems, please send us a technical support request on
the Support section of
http://www.epygi.com/
. Please prepare a system log file and attach
it to your request. To create a system log file, open the System Diagnostics page System
menu item Diagnostics) and click Download System Logs.
Summary of Contents for QuadroM-E1
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