Description We have a customer who is having problems installing 3CX SBC. The error message was Cannot obtain provisional data. We checked that the customer’s 3CX FQDN was entered correctly and that the SBC’s operating system is 3CX supported OS.
Category: Technology Blog
How to solve install-instance-manager returned error code 255 error
Description The following error code occurs when enable the 3CX Instance Management: install-instance-manager returned error code 255 How to solve switch to root user and input following command: wget -O – https://downloads-global.3cx.com/downloads/misc/debianpatches/9/16/0/5/20200619-os-update.sh | bash After entering the command, you can
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DIDs and extensions will be one to one
In the 3CX, if the sip trunk have many DIDs, the DIDs and extensions can be set as one to one, it means when one extension calls out through the sip trunk, one specific DID will display on the screen
How to use freeSSHd for 3CX
Background Some of our customers want to use Windows to build an SFTP server for storing 3CX backup files. In this document we will introduce how to use freeSSHd to backup 3CX(Use openssh key). Install and configure freeSSHd Go to
3CX Mailbox Server Test 5.7.0 Denied Error
Overview The mailbox server in the 3CX server is very important for the 3CX system. The mailbox server is used to send various notification emails, such as sending welcome emails to extension users and sending various types of event emails
How to block the call from 3CX IVR extension
How to block the call from 3CX IVR extension Overview If we create a Digital Receptionistextension (Also called IVR extension) when we using 3CX system, then after the call is sent to the IVR, other extension numbers can be dialed directly
How to use Putty to connect to Alibaba ECS that using SSH key pair
How to use Putty to connect to Alibaba ECS that using SSH key pair Why use a key pair for Alibaba Cloud ECS? Alibaba Cloud SSH key pair is a secure and convenient login authentication method. It consists of a
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What is the Announce Caller (Rebound)?
What is the Announce Caller (Rebound)? Overview Some of our customers will see the option “Announce Caller (Rebound)” when configuring the extension settings in the 3CX system. Many users are not sure what this option means and what it does. In
Analyze the reason why a call to an IVR extension failed
Analyze the reason why a call to an IVR extension failed Background： We have a customer tell us that only one number of their external DID number can be dialed. Other external numbers are immediately hanged after dialing. The customer
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How to configure security rules on Alibaba Cloud platform for 3CX
Background: 3CX is an open-platform, software VoIP phone system that works with popular IP Phones and SIP trunks whether on-premise or in the cloud. We have many customers who choose Alibaba Cloud platform to deploy 3CX, some customers don’t know
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