HOW TO Connect your IP-PBX Elastix to ISDN

What is ISDN ?
from Wikipedia :

Integrated Services for Digital Network (ISDN) is a set of communication standards for simultaneous digital transmission of voice, video, data, and other network services over the traditional circuits of the public switched telephone network. It was first defined in 1988 in the CCITT red book.^[1] Prior to ISDN, the telephone system was viewed as a way to transport voice, with some special services available for data. The key feature of ISDN is that it integrates speech and data on the same lines, adding features that were not available in the classic telephone system. There are several kinds of access interfaces to ISDN defined as Basic Rate Interface (BRI), Primary Rate Interface (PRI), Narrowband ISDN (N-ISDN), and Broadband ISDN (B-ISDN).

In Indonesia (my country), ISDN was provided by PT Telkom Indonesia. This article is base on my customer who wants connect to ISDN as their upstream.

this is the Topology :

As we know, ISDN is using E1 carrier, So we had to prepare E1 cabling to make physical connection. This is the configuration of E1 cabling :

Assuming the cable connection is OK . Then there are several steps you should do :

1. In System tab --> hardware Detector--> Detect New Hardware
   
   
2.  if the cable not OK or unplug or ISDN is DOWN, these color should be 'pink'. If the cable OK, ISDN is UP you will get 'green' color 
   
3. Please check and make sure : /etc/dahdi/system.conf :  loadzone=us
   defaultzone=us
   span=1,1,0,ccs,hdb3
   echocanceller=wanpipe_hwec - inactive,1-31
   bchan=1-15,17-31
   hardhdlc=16
4. /etc/asterisk/chan_dahdi.conf : [trunkgroups]
   
   [channels]
   context=default
   usecallerid=yes
   hidecallerid=no
   callwaiting=yes
   usecallingpres=yes
   callwaitingcallerid=yes
   threewaycalling=yes
   transfer=yes
   canpark=yes
   cancallforward=yes
   callreturn=yes
   echocancel=yes
   echocancelwhenbridged=yes
   relaxdtmf=yes
   rxgain=0.0
   txgain=0.0
   group=0
   callgroup=0
   pickupgroup=0
   immediate=no
   
   ;Sangoma A102 port 1 [slot:0 bus:5 span:1] <wanpipe1>
   switchtype=euroisdn
   context=from-pstn
   group=0
   echocancel=yes
   faxdetect=incoming
   signalling=pri_cpe
   channel =>1-15,17-31
5. For check status in Asterisk console, use command asterisk -rx "dahdi show channels"

HOW TO Activate video call in Elastix

Hi there, these tutorial will guide you How To activate video call. I hope you know, Elastix was made from FreePBX, so you have to entered FreePBX configuration. How is it ?

1. Login to Elastix dashboard
2. choose Security tab in above
   
3. Select 'ON' in "Enable direct access (Non-embedded) to FreePBX: ", Then Save
   
4.  After that choose PBX tab
   
5. You will get FreePBX administration page. In the 'Tools --> Asterisk SIP Setting, please 'enable' Video Codecs 
   
6. Submit then Apply your configuration.
7. Done.

HOW TO register your extension into X-Lite softphone

X-lite softphone, is software on MS Windows based for VoiP client. we can make our PC become IP-Phone using this applications. First, you have to download X-lite here

1. After download you have to install. I thought, I do not need to explain how to install applications on Windows systems. You are too smart so it does not need to be discussed.
2. Open your X-lite.
   
3. Right-click on the screen and then choose "SIP Account Setting"
   
4. click "Add" you will get Properties of Account 1 page, please fill the blank form. Based on article
   
   HOW TO Create SIP extension on Elastix we had created Extension 101 on the server Elastix 192.168.20.222 with secret "abcd1234"
   
5. Click OK, back on to SIP Account window, please check 'Enable' for register your SIP Account, then click 'close' buttont
   
   
6. Now your x-lite softphone is ready to make a call. 
   

HOW TO Create SIP extension on Elastix

As seen in the above topology,
Elastis is IP-PBX Server, and the IP-Phones are clients.
Our goal in this tutorial is IP-Phone Ext 101 can call Ext 102 and vice versa.
For assumptions, Elastis has IP 192.168.20.222. So we can access it from web browser https://192.168.20.222,

1. Open http://192.168.20.222 in the web browser, you will get the login page. Please fill username with 'admin' and your admin password of course.
   
2. after login you will get Elastix's 'dashboard. In this page you can see your server healthy.
   
3. For PBX configuration please click PBX tab, Now you enter PBX configuration page
   
4. Click submit for register new Generic SIP Device, input extension to be registered and the secret
• Extension :101
• Display name : Jhony
• secret : abcd1234
  
  click the submit button at the bottom
5.  repeat Step 3 and 4 for add another extension
• Extension : 102
• Display name : Mike
• secret : abcd1234
6. Now click "Apply Configuration Changes Here" for save your configuration
   
7.  Now your Elastix has two extension 101 and 102. For clients we will discuss in another article. So for the assumptions you have done register the extension on the client.
8. In this stage, extension 101 can call 102 and vice versa.