Description Push-to-talk (PTT) is a feature found on some communication devices, such as two-way radios and walkie-talkies, that requires the user to press a button in order to transmit their voice. It is often used in situations where multiple people may be sharing the same communication channel and it is important to prevent accidental transmissions … Read more
Description Ghost calls will usually affect the phone level. You may find it annoying by getting authorized calls. You can increase the security on the affected phone by setting the following parameter to YES in Grandstream IP Phones – GXP16XX/17XX/21XX and HT8XX ATAs models. Validate Incoming Messages Check SIP User ID for Incoming INVITE Accept … Read more
Description This article describes the call flow of Attended Transfer initiated by Grandstream GXP2135. VoIP packets and the phone’s Syslog messages will be discussed in this article. Call Flow a. Ext. 1001 dials Ext. 1007 b. Ext. 1007 puts the call on hold with ext. 1001 by pressing the Attn Transfer button on the Call … Read more
Description DNS SRV (Domain Name System Service Record) mode is a feature available in Grandstream IP phones that allows the phones to automatically discover and register with a SIP server using DNS SRV records. This article shows the example settings of DNS SRV Mode in Grandstream IP Phones.
Description This article describes the steps on how to configure Apache Web Server as Phonebook Server in Grandstream IP Phones. Install Apache Web Server in Ubuntu Virtual Machine Step 1: command sudo apt-get update Step 2: command sudo apt install apache2 Step 3: command chmod –R 777 /var/www At Apache server Step 1: Copy phonebook.xml to the folder … Read more
Description This article describes the simple steps on how we configure 802.1X authentication protocol in WP810 and GWN76XX Access Point. Steps Configure a Radius Server, you may follow this guide to install a FreeRadius server in a separate machine. At GWN76XX, create a SSID (the SSID is named as ‘CaptivePortal’ in this example), and select … Read more
Description You may find the phone’s admin guide a little confusing when it comes to Self-Defined Time Zone setting under Date and Time Setting. This article shows you the steps to complete How to a. Navigate to the phone‘s web interface > Setting > Preferences > Date and Time b. Time zone: select Self-Defined Time … Read more
Description Besides resetting the phone via Web UI or reset pin on the device, you can also factory reset the phone via SSH command. Steps Step 1: Enable SSH under the phone’s Web UI > Maintenance > Security Setting > Save and Apply. Step 2: Download and install Putty on your PC. Enter the … Read more
Description The Call Waiting feature allows the users to answer another call while they are already on an active call. Settings The Call Waiting feature can be configured at the IP Phones. Go to Settings > Call Features Disable Call-Waiting During an active call and you receive a second call, the second caller will get … 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