Description If you are new to telephony networking and troubleshooting, this guide shows you step-by-step setup and configuring the parameters to capture the packets locally in Grandstream devices. When we run into telephony issues (for eg. no audio, BLF keys are not working, unable to make calls, etc), in order to have the Support and … 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).
Description This article describes the speaker specifications of Grandstream SIP Speaker GSC3510 and GSC3505. The speaker on GSC3510/3505 is a full-range speaker at 120~20kHz. It is a 6.5 cm (2.5″) full-range speaker with a balanced frequency response and very good highs. It is suitable to be a built-in speaker for music reproduction and as the … Read more
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
Description Syslog is a powerful tool for monitoring and troubleshooting network and system issues. This article describes the Syslog and Packet Capture settings of different Grandstream models. IP Voice Telephony GXP16XX,GXP17XX & GXP21XX GRP260X GRP261X WP810 Click here to find out more on how to use internal Syslog capture in WP810. DP75X/DP72X Facility Management GDS3710 … Read more
Description Speed dial is a feature found on many telephones that allows users to quickly dial a pre-selected phone number by pressing a single button or a combination of buttons. This saves time and eliminates the need to manually dial long or complex phone numbers every time they need to be called. This article describes … Read more
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 DHCP option 43 is a vendor-specific option that can be used to provide configuration information to DHCP clients. It can be used to provide the DHCP clients with the server’s IP address that hosts the firmware files. When the clients receive this information, they can initiate a TFTP (Trivial File Transfer Protocol) session to … Read more
Description Auto Voice VLAN is a feature in network switches that automatically assigns a separate VLAN to voice traffic on the network. It allows voice traffic to be prioritized and managed separately from data traffic, ensuring high-quality voice communication. When an IP Phone is connected to a switch port that has Auto Voice VLAN enabled, … 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