Failed to import and upload device configuration in Grandstream Analog Gateway GXW42XX series

Grandstream FXS GXW42XX Gateway Failed to Upload Device Config

Description This article describes the issue of uploading the device’s XML config file to Grandstream Analog Gateway GXW42XX. When exporting and importing the XML config from one gateway to another, you may experience an error ‘Failed. Please try again.’ Workaround To solve this, remove <mac>xxx</mac> from the XML Config and re-upload it to the new … Read more

No Ringback Tone when making outbound calls with Grandstream IP PBX UCM63XX

No Ring Back Tone when making outbound calls with Grandstream IP PBX UCM63XX

Description No ‘ringback tone’ issue on outbound calls occurs when the PBX or UCM receives 183 Session Progress (with SDP) first and then 180 Ringing later from the SIP Service Provider (ITSP). It would be a 183 Session Progress message to play the ‘Early Media’ on the caller’s phone. Also, missing SDP in 183 Session … Read more

Grandstream UCM Remote Connect (UCMRC) Strict RTP causes no audio between IP Phones

Strict RTP Grandstream UCMRC Remote Connect

Scenario There is no audio issue in the calls between IP Phones using UCMRC. However, audio works when the call is established between the Wave app and the IP Phone with the same registered extension. Solution The “Strict RTP” option cannot be enabled while using the remote domain address of UCMRC services. When using the … Read more

Grandstream Wave iOS Crash Application Log

Description Grandstream Wave is a softphone application that allows users to make and receive phone calls over the internet using a computer, smartphone, and web browsers. This article describes the troubleshooting steps when the application crashes on iOS devices (such as iPhones and iPads). 1. Go to iPhone > Settings > Wave > Disable Contacts. … Read more

Slowness issue in Grandstream IP Phone GRP261x series

Description Slowness in IP phones can be attributed to various factors. This article suggests the troubleshooting steps to address slowness and sluggish issues in Grandstream GRP2612 or GRP2613 IP Phones: 1. Disable CPE (TR-069) under System Settings 2. Disable ‘Send SIP Logs’ and ‘Auto Recovery from Abnormality’ under Maintenance > System Diagnostics > Syslog 3. … Read more

Debugging logs required for Grandstream GWN76XX Access Point Issues

Debugging logs required for Grandstream GWN Access Point Issues

Description This article describes the required information to capture for various issues in Grandstream GWN76XX access points before submitting a helpdesk ticket. This helps the product support and development teams to understand and resolve the issue more quickly and efficiently. 1. Description of the issue (required) Clearly describe the issue you are facing with the … Read more