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8/6/2019 Ictp Voip Lab 2010
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VOIP: Lab Exercise
Stephen Okay
Abdus Salam Intl Center for Theoretical Physics, Trieste Italy
March 4th 2010
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Goals
Exercise 1
Set up a small office phone system using analog phones, ATAs and anAsterisk server on a LAN
Add users and extensions to the Asterisk server
Configure the ATAs to register with the Asterisk server
Test it out: Make calls, leave and check voicemail, have fun!
Exercise 2Set up a extensions for users at a remote campus connected via WLAN
Users are moving to different buildings at a University. These are all connected up
by a WLAN. Set up an access point to allow the phone/ATA to register to the
Asterisk server over the wireless network.
What mode(client/AP/bridge) would be best to do this with ? Should you NAT ?
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Contacting the Asterisk Server
From a web browser open the following link:
http://192.168.4.200:8088/asterisk/static/config/index.htmlLogin with the username:administrator password:wireless
From the menu on the left, click on Users
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http://192.168.4.200:8088/asterisk/static/config/index.htmlhttp://192.168.4.200:8088/asterisk/static/config/index.htmlhttp://192.168.4.200:8088/asterisk/static/config/index.htmlhttp://192.168.4.200:8088/asterisk/static/config/index.html8/6/2019 Ictp Voip Lab 2010
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Adding users with Asterisk-GUI
Click on Create New User fill in like below and click Update
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Adding an extension to Asterisk(concluded)
Click on System Status and you should see the new extension
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Configure your ATA
Perform a factory-reset of your ATA
Pick up the phone and dial ****When prompted, enter 73738#, wait a moment, then press 1
The ATA will be reset to factory defaults
Find out the IP address of your ATA
Pick up the phone and dial ****
When prompted, enter 110# and write down the IP address spoken to
you
In a browser window go to: http://
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Configure the ATA
Click on Admin Login
Admin
Login
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Configure the ATA
Go to this URL:
http:///admin/advancedClick on Line1 and you should see a screen like this:
set to yes
Leave as no for now
set to 5060
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Configure the ATA
Make these changes, then click Save Settings. You can leave the
other settings alone
IP of Asterisk Server
Set to yes
Set to wireless
Set to your group name Your extension
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Configure the ATA
Click on SIP and confirm/set the settings indicated below, then
Save settings
Set to 60 just to start, then change to
something more like 600 once youve
verified things are up and running
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Check Registration
Registration State should now be Online
If you pick up the phone now, you should hear a dial tone. This will
sound like a continuous hum rather than an alternating tone.
Go back to the Asterisk Server Status page and dial an extension that
is marked as Free
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Exercise 2
Suppose now that have a University campus where the buildings are
connected to each other via WLAN. We now want to provide accessto the Asterisk server to those buildings using wireless.
Configure a Ubiquiti AP to connect to the wireless school AP so that
it allows the ATA to talk to the Asterisk server without NAT-ing.
Power off the ATAPlug the ATA into the Data port of the AP client and power it back on.
It should re-register with the Asterisk Server.
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