Description This article describes the error Failed to bind LDAP session when configuring Phonebook Download Configuration in Grandstream IPPBX UCM63XX. The example shown on the phonebook Download Configuration page is not up-to-date. To avoid the binding error in UCM63XX, make sure you fill in cn=admin,dc=pbx,dc=com in the Username field. Go back to the LDAP Phonebook … Read more
Description This article describes how to configure Firewall Outbound or Inbound Rules in Grandstream GWN76XX Access Points to permit or deny traffic based on SSID. When creating firewall rules, make sure that you do not include the protocol in the Domain Name field. For eg. www.grandstream.com instead of https://www.grandstream.com The More You Know You may … Read more
Description This article describes the diagnosis steps with low volume in the Grandstream USB Headset GUV3XXX series before submitting an RMA request with the Helpdesk. Steps a. Test with different laptops, PC, or devices b. Test with different applications for eg Zoom, Teams, IPVideoTalk, etcc. Record audio with Audacity and verify if you are able to … Read more
Description This article describes the error when creating and joining a meeting via IPVT10: ‘The MCU resource is unavailable, please try again later.’ warning pops up. Possible causes a. Verify if the license applied is valid under Advanced Settings > License Management b. Go to System Information and identify if there is an error message. … Read more
Description This article describes the difference between Grandstream GVC3220 (US) and GVC3220 (World). The Wi-Fi channels are different between GVC3220 (US) and GVC3220 (World) models. Some Wi-Fi channels in the US conflict with the Radar channels, and they cannot be used in the US region. GVC3220 (US) can only use the Wi-Fi channels below:2.4G: 1 … Read more
Description When clicking to Download Search Results at the CDR page, it returns an error {“response”: { “need_apply”: “no” }, “status”: -11 }. This message usually pops up when the card memory is full. When the USB or SD Card reaches a certain capacity, you click on any wav file (for eg. MoH), you will get … Read more
Description: Sometimes you will notice that the Grandstream GWN76XX Access Point event log shows multiple messages of WPA-PSK deauthentication (four-way handshake failure) resulting in clients’ Wifi disconnection. When the client device’s RSSI is below -70dBm, it is scanning continuously to find a new AP to roam and connect to. At around -75dBm to -80dBm, the … Read more
Description This article describes the issue of missing Caller ID when a call is made out from the PRI trunk to the SIP trunk via Grandstream GXW450X. Scenario E1 — GXW4502 — SIP Trunk (voipsyd06) A GXW450X is connected with a VoIP Trunk and an analog PABX on E1. When the analog PABX makes an … Read more
Description This guide summarises the common issues and troubleshooting methods listed in the official guide. Issue Troubleshooting Weak Signal 1. Remove objects2. Change locations, and avoid mounting near electronic devices3. Select 5GHz as a priority Interference(due to objects) 1. Run Wifi Analyzer to find out if the neighboring APs are using the same channel2. Reduce … Read more
Description This article describes the recommended fax settings for Grandstream Gateways and ATAs. The suggested parameters may not apply to all environment setups. Recommendations Click Update and Apply, followed by a reboot. Troubleshooting and Logs On the Advanced Setting tab, please configure: – Syslog Server: IP of the PC with Wireshark – Syslog Level: Extra DEBUG – Send SIP Log: yes – Save and … Read more