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| Message | Meaning |
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| The remote party is unable to connect. | Check the remote party’s settings. |
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| Cannot connect because the line is busy. | Cannot connect because the remote party’s line is busy. |
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| The connection was canceled by the remote | Cannot connect because the remote party cancelled a call to the local site. |
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| party. |
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| Connection failed. | Check the communication settings. |
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| 4xx response received. | Cannot connect due to reasons such as the remote party using media not |
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| supported by the unit. |
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| 5xx response received. | Cannot connect due to reasons such as a server error. Check the SIP server. |
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| The connection was canceled by the remote | Cannot connect because the call was rejected by the remote party. |
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| party. |
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| 6xx response received. | Cannot connect due to reasons such as the remote party not being found. Confirm |
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| the remote party’s number and settings. |
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| Cannot connect using IPELA VC Link under | Check the IPELA VC Link settings. |
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| the current settings. |
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| Cannot connect using SIP under the current | Check the SIP settings. |
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| settings. |
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| Router is not supported. (No | Make sure that you are using a router that is supported and that the router settings |
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| response) | are correct. |
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| Router is not supported. (Service | Make sure that you are using a router that is supported and that the router settings |
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| unavailable) | are correct. |
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| Router is not supported. (Failed to obtain | Make sure that you are using a router that is supported and that the router settings |
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| WAN IP address) | are correct. |
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| Router is not supported. (Port mapping | Make sure that you are using a router that is supported and that the router settings |
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| failed) | are correct. |
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| Cannot communicate through SIP. (Port | Make sure that you are using a router that is supported and that the router settings |
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| mapping failed) | are correct. |
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| There are no open ports. Confirm the | Make sure that you are using a router that is supported and that the router settings |
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| router’s port settings. | are correct. |
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| Failing to automatically configure NAT | Make sure that you are using a router that is supported and that the router settings |
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| settings. | are correct. |
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| Cannot execute the Function Extension | When using IPELA VC Link, make sure to disable the SIP server setting. |
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| Command because the setting for use of |
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| the SIP server is enabled. |
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| Rejected by server. | The call was disconnected by the remote party. |
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| Authentication error. | Check the ID and password. |
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| Cannot connect. Please try again later. | Try calling again later. |
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| Router is not supported. (Port mapping | Make sure that you are using a router that is supported and that the router settings |
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| delete failed) | are correct. |
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| Unable to communicate. (Port mapping | Make sure that you are using a router that is supported and that the router settings |
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| failed) | are correct. |
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| Communication with UPnP is not available. | Make sure that you are using a router that is supported and that the router settings |
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| (Timeout) | are correct. |
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| Communication with UPnP is not available. | Make sure that you are using a router that is supported and that the router settings |
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| (Busy) | are correct. |
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| Communication with UPnP is not available. | Make sure that you are using a router that is supported and that the router settings |
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| (Internal error) | are correct. |
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| Connection with the selected line interface | Check the current communication mode. |
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| is not available in the current |
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| communication mode. |
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Appendix |
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| Disconnected because reception of packets | Packets were not received properly. | |
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| from the |
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112 On Screen Messages