Description This page describes a simple simulation of configuring multicast paging in UCM and IP Phones. Steps: 2. Go to IP Phone > Setting > Multicast Paging > Listening Address > enter the same Multicast IP Address and port as configured in UCM 3. Dial the paging extension (eg. ext. 8008) and the phones with … Read more
Description When making outbound calls, the users may hear a ‘beep’ sound before ringing back or a call is established via HT8XX. Cause The ‘beep sound’ is part of the call waiting caller ID alert signal. The ‘Broadsoft’ feature requires the device to update “connected line ID” to the analog phone, upon receiving 180 Ringing. … 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
Description We have configured the HA feature with two UCM630X successfully. We also configure a SIP Peer trunk with an Avaya PBX. However, when the phones are registered with HA Cluster IP address, the outbound calls fail with an error: The call is rejected by the server. The outbound call works if the phones are … Read more
Description This article shows you the steps by steps on how to configure and troubleshoot Grandstream UCM’s Email Setting using a Gmail account. How-to 2. Go to PBX Settings –> Network Settings –> Basic Settings > DNS Server 1, enter Google DNS (for eg. 8.8.8.8), followed by Save and Apply. 3. Log in to your … Read more
Description There is a call drop issue that involves Fanvil Indoor Station and Grandstream GXV3350 registered through UCM63XX. Missed calls are shown on the Fanvil SIP Indoor Station. However, a call goes through if it is dialed from GXV3240. Analysis We manage to capture the packets from UCM and analyze both good and bad calls … Read more
Description In some countries, the providers of SIP trunks deliver a private IP for the routing of calls on their SIP trunks, in these cases, it is necessary to manage static routes to redirect outgoing calls on their private network or interface. In dual-mode, the UCM6XXX is able to handle a different network per individual port and a … 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