Quadro Quadro4x Installation Guide download pdf (Page 59)

Quadro Manual I: Installation Guide Appendix: Checking the Connections

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-53: 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

Quadro2x, 2xi, Quadro4x, 4xi, Quadro16x, 16xi; (SW Version 5.2.x) 59

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Quadro Quadro4x Installation Guide Page 59