Archive for 'Open Source' Category

Setting up a VOIP server, part 5 (Weather by Zip)

By jbayer - Last updated: Wednesday, March 23, 2011

I wanted to have the feature available to get the weather by zip code, so I tried to install the Weather by zip code module.  There is a deplorable lack of documentation on the steps needed to install this.  As usual, this article documents my experiences with Elastix, but since Elastix uses FreePBX this should […]

1,436 views

DHCP and TFTP servers

By jbayer - Last updated: Tuesday, March 22, 2011

TFTP servers are used to provide configuration files for local systems.  An easy way to tell systems the address of the tftp server is to use DHCP option 66. DHCP can provide quite a lot of information when it provisions an address.  For a complete listing, go to this link, however all we are concerned […]

6,533 views

Setting up a VOIP server, part 4 (aastra)

By jbayer - Last updated: Tuesday, March 22, 2011

The IP phones we are using are made by Aastra, and are great pieces of equipment.  When booting up they contact (by default) a TFTP server, which is identified by DHCP option 66. We needed to have our phones portable, and didn’t want to go through the hassle of setting up an external TFTP server […]

1,475 views

Setting up a VOIP server, part 3 (Elastix)

By jbayer - Last updated: Tuesday, March 15, 2011

I chose Elastix, partially because it is a a popular distribution, partly because it is easy to install, and partly because it includes additional functionality which we may use in the future.  Elastix is actually a complete communications server, including email, fax, VOIP, IM via Jabber, and integration with different CRMs http://www.elastix.org You can download […]

2,002 views

Setting up a VOIP Asterisk server, part 2 (IP Phones)

By jbayer - Last updated: Tuesday, March 15, 2011

IP phones are plentiful, but we wanted reliable phones which the phone system could use to the fullest.  I’ve used several, including Aastra and Grandstream.  The best supported IP phones for Asterisk are made by Aastra. Their line includes: 6730i Series 6750i Series 9000i Series Any one of these phones are a great choice.  We’ve […]

1,751 views

Setting up a VOIP Asterisk server, part 1

By jbayer - Last updated: Tuesday, March 15, 2011

The saga of replacing a legacy phone system with a complete VOIP solution The lease was coming to an end on our legacy phone system, and we started looking for an alternative.  We considered the following choices: Extend the lease for another 3 years, at which time we would own the system Replace the phone […]

2,308 views

Set up a mail server for multiple domains using Postfix, Dovecot & PostfixAdmin

By jbayer - Last updated: Wednesday, March 9, 2011

A common task is to set up a mail server.  A less common task is to be able to support multiple domains on the same mail server, with the possibility of the same address on different domains. An easy way to do this is to use Postfix and Dovecot, using MySql as a backend to […]

5,777 views

Installing SugarCE on CentOS (and Fedora)

By jbayer - Last updated: Monday, March 7, 2011

SugarCE is an open-source version of the SugarCRM, (CRM meaning Customer Relationship Manager).  I needed to install it on a CentOS system, so made the attached script.  The script assumes that you are starting with a minimal CentOS 5.5 install, Fedora will most likely work as well. The SugarCRM site is located:   http://www.sugarcrm.com/crm/ and here […]

930 views

Zoneminder and IE 8

By jbayer - Last updated: Wednesday, March 2, 2011

Zoneminder hasn’t been updated in over a year, and in that time new browsers have been released.  One of them, IE 8, has depreciated the use of the <applet> tag, which Zoneminder uses to load Cambozola (a java-based viewer) The following is a replacement for the applet code.  Simple replace the applet code in the […]

2,344 views

Software Distribution & Syncronization

By jbayer - Last updated: Monday, February 28, 2011

I recently had to update about 30 different servers with the identical software.  This is an all-too-common occurance for an administrator, and there are many different systems available to do this.  However, most of them do too much and are generally non-trivial to set up and manage.  I wanted a system which would be easy […]

587 views
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