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
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
Description Grandstream IP PBX UCM6XXX supports a CDR API interface to interact with third-party external billing software and collect recording details files from the PBX. The API uses HTTPS to request the CDR data and call recording data matching given parameters as configured on the third-party application, as well as a new API interface to … Read more
Description This article describes the Grandstream FXS Gateway 16/24/48 port GXW42XX‘s front panel can be directly connected to the 24 ports (RJ11) from the Patch Panel. You can also use the 50 pins connector (Amphenol) that is terminated to MDF (Terminal Block).
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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 You may notice that the Grandstream UCM63XX series IP PBX is accessing certain IP addresses at all times from your router or firewall services. This article explains the purposes of these IP addresses. ifconfig.meIt is used in ip2location to query the location of an IP address during UCM system startup and download the language … Read more
Description In India, there are several telecom service providers that offer SIP trunking services to businesses and organizations. This article describes call establishment issues with Grandstream IP PBX UCM and SIP Trunks in India and suggested settings to resolve them. Case 1: Call drop due to 422 Session Interval too Small (BSNL) Figure 1: UCM’s … Read more
Description GXW4501 is a digital VoIP gateway designed to connect digital T1/E1/PRI lines to an IP network, allowing businesses to take benefit of VoIP technology to reduce costs and improve efficiency. This article describes the connection issue between the gateway and IP PBX. Scenario GXW4501 is connected with a traditional PBX via the E1 port … Read more