Grandstream Wave Mobile Application – Account Registration Failed

Description When Grandstream IP PBX UCM63XX is used in remote work without Remote Connect service (UCMRC), there are certain network settings required to allow Grandstream Wave Mobile application login via UCM’s Public IP addresses; otherwise, you will get login errors such as ‘Account Registration Failed’ or ‘Unable to connect to the server’. Configure the ports … Read more

Grandstream UCM6510 and HA100 connection sample diagram


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

Configuring Grandstream IPPBX UCM’s Email Setting (Gmail)

Grandstream UCM Email Setting Feature Image

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 The Grandstream UCM uses SMTP to send out the emails. Configure SMTP Server to Each time you make changes to the Email Setting, you have to re-enter the email authentication … Read more

How to search and display Grandstream UCM’s LDAP contact name on the phones

Scenario: If you are using Grandstream UCM as LDAP Server, you may find that that the contact names are not showing on the phones when you dial out, or on the incoming calls. There are some settings not covered in the LDAP Config guide. At the UCM Go to UCM Web UI > System Setting … Read more