Troubleshooting Delayed Ringing Issues on Grandstream HT8X1 and UCM63XX

Troubleshooting Delayed Ringing Issues on HT8X1 and UCM63XX

Description Delayed ringing can be a frustrating issue. There is a delay of 12 to 17 seconds for inbound calls to connect from the PSTN to IP phones via the Grandstream FXO gateway HT8X1 and the IP PBX UCM63XX. In this article, we’ll explore some common causes of delayed ringing and provide troubleshooting tips to … Read more

Inbound Calls to DID Fail Due to Incorrect Configuration of DID Mode in Grandstream PBX UCM63xx

Grandstream PBX 404 Not Found Inbound Calls to DID Fail Due to Incorrect Configuration of DID Mode

Description When the Inbound Route’s Pattern is specified using a Direct Inbound Dialing (DID) number or the format _03x, the call fails with a prompt ‘The number you have dialed is invalid, please try again later.’ resulting in a 404 Not Found error returned by the Grandstream IP PBX UCM. Analysis Please enable UCM’s Syslog … Read more

How to Diagnose a Hardware Defect on the Network Port of the FXS Gateway GXW42XX series

How to Diagnose a Hardware Defect on the Network Port of the GXW4224.jpg

If you encounter issues such as frequent disconnections or cannot obtain an IP address on the Grandstream FXS Gateway GXW42XX series, here are the steps for diagnosing hardware defects in the network port: If the above steps do not resolve the issue, please contact the Support team for further assistance.

Intermittent Unresponsive Events on GXW42XX Gateways (1.0.23.x)

GXW42XX (1.0.23.x) Intermittent Unresponsive until Reboot

Description We are currently experiencing intermittent unresponsive events with the Grandstream GXW42xx FXS gateways. In the most recent incident, while the gateways were responsive to pings, users could not log in. This required the customer to manually power off the gateways for 2-3 minutes before they resumed normal functionality. It’s worth noting that there is … Read more

Unable to upload the file. Please try again. Reason: CGI Error

Description When uploading the firmware file to the Grandstream GXW42XX FXS gateway, you may encounter the error: “Unable to upload the file. Please try again. Reason: CGI Error.” How-to This error typically occurs when the incorrect firmware file is uploaded. The GXW42xx V2 device requires a different firmware file than the GXW42xx V1 device. Please … Read more

Video Invitation Issues with Mitel MiVoice 3300 System and Grandstream GXV3XXX Android IP Video Phones

This article addresses the video call establishment issue encountered with Grandstream Android IP Video Phones GXV3XXX when used with the Mitel MiVoice 3300 system. Users may receive a “Video Invitation Failed” error during calls. This issue can be resolved by adjusting the SIP Options and Signaling Header Manipulation settings under the Mitel system’s SIP Device … Read more

HT8X1 – Subnet Mask Mismatch Network Ethernet Settings

Mask Mismatch when Setting Network in Grandstream FXO Gateway HT8X1

Description This article describes how the Network Ethernet Settings in Grandstream FXO gateway only allow the following block of IP addresses, as stated in RFC1918. The RFC reserves the following ranges of IP addresses that cannot be routed on the Internet: The incorrect IP range or subnet mask will prompt you with a ‘Mask Mismatch’ warning or … Read more

Hunting Group feature in Peer Trunk with Grandstream FXO Gateway HT8x1 and IP PBX UCM63XX

Description This article describes the steps to configure the PSTN lines in the Hunting Group with HT8X1 and Grandstream IP PBX UCM63XX. We use HT841 in this case. Steps 1.Configure a Peer Trunk between UCM63XX and HT841 following the steps in the guide 2.Connect PSTN lines to FXO ports of HT841 using RJ11. We use … Read more