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Elastix Unified Communications Server Cookbook

Elastix Unified Communications Server Cookbook

By : Gerardo Barajas Puente
5 (3)
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Elastix Unified Communications Server Cookbook

Elastix Unified Communications Server Cookbook

5 (3)
By: Gerardo Barajas Puente

Overview of this book

This book is aimed at those who want to learn how to set up an Elastix Unified Communications Server without losing ground on Unified Communications and Voice over IP.
Table of Contents (19 chapters)
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13
A. Description and Use of the Most Well-known FreePBX Modules
14
B. Addon Market Module
15
C. Asterisk Essential Commands
16
D. Asterisk Gateway Interface Programming
17
E. Helpful Linux Commands
18
Index

Using Wireshark for debugging

Another way to check the status of a call, for example, is by using a network protocol analyzer, such as Wireshark (http://www.wireshark.org/). This program allows us to capture all network traffic moving through our network devices.

Using Wireshark for debugging

How to do it…

  1. Select the interface connected to the LAN or VLAN where our IP-PBX is and apply the filter to capture all packets from port 5060 (SIP). If we'd like to capture IAX protocol calls, we can specify the filter option as follows: udp port 4569. This is shown in the next image:
    How to do it…
  2. Click on the Start Capturing button and we will start seeing the flow of SIP packets through our network device, as shown in the next image:
    How to do it…
  3. After capturing the packets, we can select the Statistics | Flow Graph menu to see the flow of packets from an SIP call in a more graphic way, as shown in the next screenshot:
    How to do it…
  4. The next image shows the flow of a call by using the SIP protocol:
    How to do it…
  5. If for any reason we do not specify a port for capturing traces...

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