Installing ZeroTier VPN Client on CentOS 7

ZeroTier is a powerful and easy-to-use VPN solution that allows you to create secure networks and connect devices across the globe. In this guide, we will walk you through the installation process of the ZeroTier VPN client on CentOS 7.

ZeroTier

Step 1: Install EPEL Repository

First, you need to install the EPEL (Extra Packages for Enterprise Linux) repository, which contains additional packages for CentOS.

yum install epel-release

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How to change SIP Port in Issabel

How to change SIP Port in Issabel

Securing Your Issabel IP PBX: A Step-by-Step Guide to Changing SIP Ports

Issabel IP PBX systems play a pivotal role in modern business communications, facilitating seamless voice and data integration. To enhance the security of your Issabel IP PBX, one effective measure is to change the default SIP (Session Initiation Protocol) ports. In this guide, we will walk you through the process of changing the SIP port on your Issabel IP PBX for improved protection against potential security threats.

1- Login to Issabel Web interface

go to  PBX > PBX Configuration > Setting > Asterisk SIP Setting  >  Advanced General Settings  >Bind Port

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How to Change Issabel PBX web interface ports for Enhanced Security

How to Change Issabel PBX web interface for Enhanced Security

In today’s digital landscape, ensuring the security of your Issabel PBX is crucial. One effective way to enhance security is by changing the default HTTP and HTTPS ports. This step-by-step guide will walk you through the process, making your Issabel PBX less susceptible to potential threats.

Step 1: Changing the HTTP Default Port

a. Navigate to the HTTP configuration file:

Open the file located at /etc/httpd/conf/httpd.conf using your preferred text editor.

b. Modify the default HTTP port:

Locate the line that reads “Listen 80” and change the port number to any desired port other than 80.

For Example I have changed 8089

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How to configure BSNL SIP Trunk on Asterisk

How to configure BSNL SIP Trunk on Asterisk or Issabel

BSNL now provides SIP Trunk with DIDs  in genreal they call it SIP PRI  and asking you to buy channels as they were selling copper  PRI links .Now they are providing same service with fiber optice cables on FTTH connections.

They are giving fiber link as same they are providing FTTH  internet services  with ONT and providing PRI service through SIP Protocal over the VPN  using OPEN VPN or SoftEther .

Depend on your convinent they are asking which VPN service you will use . Here I am using OPENVPN. But before implementing SIP PRI from BSNL as I was thinking it  can be  use  over OPENVPN from any internet network .

but they have played the game that there OPENVPN server can be accessed by only there network they have provided and sip server can be access only over VPN connection .I dont know  why they have used OPENVPN  if you are using IP based security and SIP authentication and SIP registration . they have just made it complicated if your Applicance does not support OPENVPN then you have to used additional device or router which support OPENVPN.then you can reach there SIP Proxy server.

Now below are the breif  steps to configure BSNL SIP trunk

BSNL SIP PRI
BSNL SIP PRI

 

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How to Connect two Grandstream UCM via SIP Trunk

Effortless Communication: Connecting Grandstream UCM via SIP Trunk for Seamless Internal Extensions Calling
In the realm of unified communication, Grandstream’s UCM series stands out as a reliable and feature-rich solution for businesses seeking seamless connectivity. This article aims to guide you through the process of connecting your Grandstream UCM via SIP trunk, enabling effortless internal extensions calling. Follow these step-by-step instructions to enhance your communication infrastructure and streamline internal collaboration.

Below are the youtube link with detailed stepby step explanation.

Step 1 – Create SIP Trunk on UCM Site A and UCM and Site B
Step 2 – Create Outbound Route to Call another Site UCM extensions
Step 3 – Create Inbound Route to recive calls from another site to local extensions.
Below are the Youtube link they have explained very well.

A Step-by-Step Guide to Port Forwarding on MikroTik Router for Vicidial Remote Agents

A Step-by-Step Guide to Port Forwarding on MikroTik Router for Vicidial Remote Agents

In today’s remote work landscape, maintaining a seamless connection between your Vicidial call center software and remote agents is crucial. One way to achieve this is by correctly configuring port forwarding on your MikroTik router. This guide will walk you through the process, ensuring your remote agents can access Vicidial without any hiccups.

Why Port Forwarding Matters

Port forwarding is essential for enabling external access to specific devices or services within your local network. In the context of Vicidial, it allows remote agents to connect to the call center software securely. Without proper port forwarding, remote access can be challenging or impossible.

Prerequisites

Before diving into the configuration, make sure you have the following:

  1. A MikroTik router.
  2. Access to the router’s web interface or Winbox.
  3. Vicidial already set up and running within your local network.

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How to connect your Cloud Vicidial with your office Issabel PBX

How to connect your Cloud Vicidial with your office  Issabel PBX.

Vicidial is a powerful open-source call center software that is widely used by businesses to manage their call center operations. Issabel, on the other hand, is a popular open-source PBX (Private Branch Exchange) system that allows businesses to manage their phone systems. Connecting your Cloud Vicidial with your office Issabel PBX can provide your business with a seamless communication solution that can help improve your call center operations. In this blog post, we will guide you on how to connect your Cloud Vicidial with your office Issabel PBX.

Connecting your Cloud Vicidial with your office Issabel PBX can provide your business with a seamless communication solution that can help improve your call center operations. By following these simple steps, you can easily set up the connection between your Cloud Vicidial and your office Issabel PBX. This can help your business to streamline its communication processes and enhance customer service.

If  you are planning to run campaign from cloud Vicidial and your PRI or SIP Trunk is connected to your local Issabel PBX . and which is not having a public IP and its behind the NAT and your internet connection is giving you a dynamic IP.

So you can not make IP to IP SIP trunk .

So we can make a SIP trunk in Issabel which will register  with Cloud Vicidial .We are doing this  because of Cloud Vicidial is having Static Public IP and it will not change.So it will be easy to make SIP trunk. We are using registration with authentication.

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Asterisk SIP Troubleshooting command line

Asterisk SIP Troubleshooting command line .VOIP communication common protocol is SIP .

SIP Troubleshooting is very important in VOIP. Below are some basic command used in SIP Troubleshooting.

sngrip      Capture and Analyse SIP Packets on the Command Line

yum install sngrep
apt-get install sngrep

For more details visit :- https://falkus.co/2018/07/sngrep-capture-and-analyse-sip-packets/

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How to configure Cisco Phone 7975g with Asterisk

How to configure Cisco Phone 7975g with Asterisk

To work with asterisk Cisco Phone 7975g must be upgraded with SCCP to SIP firmware

Follow my old post 

1-  Download SIP Firmware for Cisco Phone 7975g

2- Configure TFTP server and upload SIP firmware

3- Boot Cisco Phone with SIP firmware after upgrade

4- configure SEP_MACaddress.cnf.xml file

5- Reboot the Cisco Phone . Continue reading How to configure Cisco Phone 7975g with Asterisk

vicibox 10 time synchronization problem with your system

vicibox 10 time synchronization problem with your system

If you PHP time and DB time is matching and not syncing with system time

and its showing red line

If DB time is wrong it means that /usr/share/astguiclient/AST_update.pl script does not update DB value. Try to launch it manually and check for output.

If it throws error:

pattern match timed-out at /usr/share/astguiclient/AST_update.pl line 470

 

 

 

 

 

 

 

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