Category Archive: Asterisk

Sep 17 2016

OAuth 2.0 Support for Asterisk 13, so XMPP connections to Google Voice can be made using the more secure oAuth authentication

If you are running Asterisk 13 (or are ready to upgrade to Asterisk 13) and are using it to connect to one or more Google Voice accounts, you can now use oAuth authentication instead of the problematic username/password, without resorting to the use of a pre-built distribution that may contain features you don’t need and …

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Sep 07 2016

How to hack the FreePBX blacklist for better call blocking capability, take 2 – adding TrueCNAM scoring

This article is mostly a repeat of the article How to hack the FreePBX blacklist for better call blocking capability, the only difference being that this article adds the ability to use TrueCNAM to help determine if an incoming call is from a telemarketer or robo-caller. It’s not foolproof, of course, and some spam calls …

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Aug 01 2015

Install Elastix Unified Communication Server – Unixmen

Elastix is an unified communications server software that brings together IP PBX, email, IM, faxing and collaboration functionality. Source: Install Elastix Unified Communication Server – Unixmen

May 26 2015

How to use a custom SIP header to pass the DID (or other data) between two Asterisk servers that jointly handle extensions

If you have multiple Asterisk or FreePBX servers at different locations that pass Intra-Company traffic between each other using SIP trunks, you may have wished for a way to pass the Calling DID number (or some other bit of data stored in an Asterisk variable) from one server to another. For example, let’s suppose that …

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May 12 2015

Forum thread: User-specific Caller ID/whitelist/blacklist in Asterisk/FreePBX

Occasionally I see a forum thread that contains enough interesting material that it could be the start of an article, but because it’s stretched through a number of posts, I can only link to the thread. And also, because I’m not the author of any of the original posts, I can’t just copy and paste …

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Apr 16 2015

Stop SOME SipVicious attacks from reaching your Asterisk, FreeSwitch, YATE, etc. PBX server

This tip was posted by user “infotek” on the FreePBX site but applies to all software PBX systems that use the iptables firewall. “infotek” wrote: By default the SipVicious scanner uses the ua : “friendly-scanner”. To block this ua, you can have iptables search the packet for that text. add the following line to /etc/sysconfig/iptables …

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Feb 25 2015

How to set up an alternate SIP port (other than 5060) using Webmin

One problem that some VoIP users are experiencing these days is that they have trouble connecting to their home Asterisk, FreeSWITCH, YATE, or other software PBX server, but only when using certain ISP’s.Ā  One suspicion is that certain ISP’s that offer their own VoIP or traditional landline service attempt to mess with packets using the …

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Feb 17 2015

Link: Securing Your Asterisk VoIP Server with IPTables

Now that you have set up your personal AsteriskĀ® server (see Tutorial), it’s time to secure it. I can’t overstate the importance of this step. Without it, you could be leaving your server’s VoIP ports open for anyone on the Internet, which may cost you a lot of money. Full article here: Securing Your Asterisk …

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Feb 14 2015

How to receive incoming Callcentric calls in FreePBX without creating multiple trunks

Just some notes on how to set up a Callcentric trunk in FreePBX and receive incoming calls without the need to create multiple trunks. This overcomes a limitation in Asterisk that is discussed in several other places (use a search engine if you really want to know). Trunk settings: When setting up the trunk use …

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Dec 20 2014

How to receive incoming faxes in the FreePBX Distro for free, without spending $150

Here is how to receive incoming faxes in the FreePBX Distro without spending $150 on their FaxPro module (which IMHO is severely overpriced, given that several other distros offer a comparable faxing solution for free, including Elastix and Incredible PBX, though I do not necessarily recommend either of those distributions for various reasons). It may …

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