Grandstream IP Video Door Phone GDS371X and Cisco Webex Video calling

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

Grandstream IP PBX UCM API Demo Tool

Grandstream UCM API Demo Tool

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

How to Perform Local Firmware Upgrade to GWN76XX Access Points using DHCP Option 43

Description This article is designed for users who may not have the ability to perform a remote upgrade or access the Web GUI for firmware uploads to the Grandstream access points. Upgrading the device can be accomplished using the DHCP Option 43 Option. This approach allows users to efficiently manage the upgrade process without needing … Read more

Grandstream Switch GWN780X(P) Auto Voice VLAN with LLDP

Auto Voice VLAN in Grandstream GWN780X switches

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

Grandstream UCM6510 and HA100 Physical Network Diagram Example

HA-connections-UCM6510-front

Description The Grandstream HA100 is a high availability IP PBX solution designed for small to medium-sized businesses. It allows for the creation of a redundant system with two Grandstream PBX UCM6510 that can automatically switch over to a secondary system in case of a primary system failure. It also supports automatic failover for SIP trunks … Read more

Grandstream IP PBX UCM – Completion Request / Busy Camp-On

Grandstream Call Completion Busy Camp on

Description This article illustrates the scenario when the caller requests Call Completion when called party is busy with Grandstream IP PBX UCM6XXX. You may refer to the complete guide here. By default, when the Call Waiting feature is disabled at the Extensions and IP Phones, the Call Completion request works only on unanswered or timeout … Read more

Understanding PPI mode: DOD Number when Call Forward to External Number

Description This article explains the P-Preferred-Identity (PPI) Header in UCM’s INVITE message when UCM forwards the call from the extension to an external or mobile number. Test Steps Packet capture Outbound CID Priority TO vs Request Headers The Request-Line and To headers show the DID used by the PBX, eg. 8887771234 is the DID, it is … Read more