Understanding the Certificates Security Settings in Grandstream IP Phones GRP261x series

Understanding Security Settings in Grandstream IP Phones GRP261X

Description This article briefly describes the Security Settings parameter in Grandstream IP Phones GRP261x series. It is important for debugging when the phones are registered via TLS/SSL. ‘Validate Server Certificates’ is mainly used for Web Interface or SSH access. ‘Check Domain Certificates’ is to check a domain using the Trusted Domain Name List. ‘SSLKeyLogFile’ is … Read more

Steps to upload bix firmware to GWN78XX switches via U-Boot

Grandstream GWN7806P firmware upgrade via U-Boot

Description Local or network upgrades may fail if the Grandstream GWN7806P and GWN781X network switches have not updated their U-Boot and CFG. This issue usually happens in devices loaded with earlier versions when the firmware file size is more than 13 MB. The guide below describes the steps to load bix firmware file to the … Read more

Grandstream GBX20 Extension Module Firmware Upgrade Failure

Grandstream GBX20 Firmware Upgrade

Description This article describes the troubleshooting steps to workaround the upgrade failure in the Grandstream GBX20 Extension module version 1.0.0.1. By default, the GBX20 firmware is upgraded by direct network download through the host phone (for eg GXV3350 or GRP2615)’s network connection and GXV3350’s firmware upgrade setup. Make sure you set firmware.grandstream.com on the GRP2615 … Read more

XML-Based Idle Screen Customization Guide for Grandstream GXP16XX Phone

XML Based Idle Screen Customization Guide for Grandstream GXP16XX Phone

Description The Grandstream GXP16xx supports XML-based idle screen customization. This XML API allows users to customize the idle screen layout as well as the logo, text, or system variables to be displayed. The design of the display and layout depends highly upon personal preferences and requirements. The document below specifies the Grandstream XML Customizable Screen … Read more

Grandstream IP PBX UCM Data Partition is Full

Grandstream IP PBX UCM Full Data Partition

Description This article describes the best practices to free up the data partition in Grandstream IP PBX UCM to avoid abnormal behaviors such as call drops, delays, and slow performance. The UCM62XX or UCM6510 series has a config partition of only 200MB while the UCM630X series has a 500MB config partition. The data partition is … Read more

Troubleshooting LAN Speed Issue with Grandstream GWN70XX Router

Troubleshooting Speed Issue with Grandstream GWN70XX Router

Description This article describes the troubleshooting steps and debug logs required when facing low-speed issues with Grandstream GWN70XX series routers’ LAN ports. Troubleshooting 1.Set up a simple network topology, and connect the PC’s LAN to one of the router’s LAN ports. [Broadband modem] = [Router] = [PC] 2.Determine the negotiated rate and Link Speed of … Read more

Grandstream IP Video Door Phone GDS371X and Cisco Webex Video calling

Description This article describes the settings to be adjusted in Grandstream IP Video Door Phone GDS371X to allow video calling with Cisco Webex. Configurations 1. Configure the Video Encoding Profile of Stream 1,2, and 3 to Baseline under Video & Audio Settings > Video Settings 2. If step 1 fails, set stream to Stream 3 … Read more