Description When working with the UCM630X series, you may encounter a warning message labeled “Pending Delivery.” in GDMS. It is important to understand what this means and how it affects your device management. What Does “Pending Delivery” Mean? The “Pending Delivery” status appears when you attempt to assign parameters or settings to an offline Grandstream … 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.
Background Issue We are connecting Hikvision camera DS2XM6726GO-IS/ND with GXV3500 decoder. However, we are getting blank or sometimes white screens on the DVR. What should I do? Facts GXV3500 is designed primarily to support Grandstream SIP Cameras. We do not guarantee compatibility with other vendors’ cameras. This is because of the different implementations of the H.264 codec … 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 This article describes how IP calls work in Grandstream GRP260X. According to the developers, a SIP account is required to register onto phones in order to run the SIP stack for the IP calls. The receiving endpoints need to disable the Use Random Ports option. The default SIP Port for IP calls is 5060. … Read more
Description This article describes the compatibility between Zoom app and GVC3200 and GVC3202. Grandstream has not done any official interoperability tests between the Zoom app and GVC320X video conferencing devices. GVC320X is running on Android 4.4.2 while the Zoom app requires Android 5.0 and above. Although you are able to install the Zoom application onto … Read more
Description This page describes the common questions or issues regarding the Grandstream Video Conferencing product GVC3220 and extension microphone GMD1208. We will be updating the contents from time to time. Questions 1. Does GVC3220 work in China? We understand that SIP will work, but what about IPVT and other third-party web-based applications such as Zoom, … Read more
Description FXS (Foreign Exchange Station) gateways and ATA (Analog Telephone Adapter) devices have specific port limitations that can vary based on design and intended use. Here’s a brief overview of short and long-haul ring load limitations: Short Haul vs. Long Haul FAQs
Description Previously the Username and Password fields can be left blank if the UCM62XX or UCM6510 act as LDAP server that allows anonymous binds. This does not apply to UCM630X in the latest firmware. Without entering the Username and Password, the UCM630X LDAP search will fail on the phone. How-to Navigate to the phone’s Web … Read more