Quadro Manual I: Installation Guide
Appendix: Checking the Connections
Quadro2x, 2xi; Quadro4x, 4xi; Quadro16x, 16xi (SW Version 5.3.x)
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If diagnostics are successful, but you are still unable to place a call to 899# then check the
SIP registration status.
Open the SIP Registration Status page using the Quadro management
System
menu item
Status
. Besides the SIP registration information for the auto attendant and each connected
extension, the
Detected Connection Type
is shown. If Quadro is placed behind a NAT
router and the STUN is enabled, the detected connection type and the IP address of this
router's WAN port are displayed.
Fig. I-54: SIP Registration Status page
Quadro cannot work behind your router if
Detected Connection Type
is one of the follow-
ing:
•
Unknown connection - unexpected error
•
Symmetric NAT
•
Symmetric Firewall
•
Blocked UDP
If you get one of the above mentioned Detected Connection Types, either connect the Qu-