Description When you usually try to make a call via a Feature Code (eg. *20*), you will see a message pop up ‘No dial plan rules matched’ on the Grandstream phone, causing the call failure. Troubleshooting ResolutionThis issue arises because the dial plan entries do not permit # and * in the middle of a … Read more
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Description If you’re facing issues with the Grandstream phones and need to perform a factory reset via SSH, follow this step-by-step guide. This method is useful when the standard factory reset option doesn’t fully clear the device memory (nvram). Steps 1. Enable SSH under the phone’s Web UI > Maintenance > Security Settings > … Read more
Scenario Mass provisioning 100 units of GXP1628’s MPK setting via Grandstream UCM’s Zero Config Steps AT UCM 1. Go to UCM’s Web UI > Value Added Feature > Zero Config > Discover GXP1628 phone > Edit > MPK Setting > select Speed Dial > enter your description and value > click Save and Update. 2. … Read more
Issue Description GRP260X freezes and is not responsive occasionally, even after firmware upgrade and factory reset. Cause GRP260X that are manufactured before March 2021 may experience this freezing issue. It is caused by the CPU loader that does not upgrade. This can be fixed by uploading the test build 0.28.8.6 followed by an SSH command. … Read more
Description Many users often forget the “Admin Password” needed to access the web interface of their IP phones, especially when the Factory Reset option is unavailable on the device menu. This article outlines methods to reset the administrator password for Grandstream devices. Triage Before proceeding, verify the following: Method 1: GDMS GDMS (Grandstream Device Management System) … Read more
Description The Call Waiting feature allows the users to answer another call while they are already on an active call. Primarily used in business phone systems, this feature enhances employee efficiency and improves customer experience. In short, the call waiting feature allows for two active call lines on a single IP phone, providing call agents … Read more
Description This article describes the firmware upgrade settings in Grandstream devices and how to analyze the Syslog when it fails. General Settings Go to the gateway or phone’s UI > Maintenance tab > Upgrade and Provisioning, and make sure that: Firmware File If you choose the upgrade the phones locally (via Web UI or local … Read more
Description As WP820 is not listed as the supported phone model by 3CX, you are unable to add the phone’s XML file or direct ‘Phone Provisioning’ it through the management console. The article shows the alternative ways to register WP820 with 3CX manually. (Note: Hosted 3CX does not support this custom FXS file) Steps: a. … Read more