Marc's Blog

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2016/03/04
by Marc
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Using a RouterOS to connect to POST LuxFibre

I have used a Routerboard running Mikrotik’s RouterOS to connect to a POST LuxFibre FTTH access for some time. I have been asked in the past to aid with similar setups, so here comes my configuration for the RouterOS CLI.

Note: This setup does NOT (yet) provide access to the Voice service delivered by POST.

In this example I’m using “ether1” to connect to the GPON NTU. (I haven’t yet tested the RouterBoard GPON SFP module, so no need to ask about it 🙂 ) Continue Reading →

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2015/10/15
by Marc
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CLIP No Screening a fairy tale?

VoIP protocols have made the manipulation of the “CallerID” easier for the regular IPBX user or admin. So users started to question the industry to relax “CallerID screening” to display the original calling party number on call forwarding (done by the PBX), or the number of the company’s Headquarters and so on. While “CallerID screening” has been around for a very long time and has been a default feature in most cases, only a few customers were able to benefit from a more relaxed screening.

With the rise of ITSPs, marketing departments invented “CLIP No Screening”, a kind of “send any CallerID and we’ll accept it”. I suppose most of you understand the value of the average email with a faked sender address, well imagine what kind of phone calls you’d get once everyone would offer “CLIP No Screening” to anybody who asked for it. Continue Reading →

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2015/05/24
by Marc
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The Fritz!Box supports HD Voice with voipGATE.

It was time again to re-install my Fritz!Box, unfortunately the box does crash sometimes and only a factory reset brings the broken services back to life (in between those crashes the box actually runs very solid).

So I setup all of my local services and DECT phones and concluded with the setup of my VoIP accounts. While testing ingress calls I noticed a nice HD icon on my DECT phones’ display. The Fritz!Box GUI surely lists my test calls with Codec G.722.

FB-G722

I have tested HD Voice with voipGATE.

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2015/05/24
by Marc
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SixXS disabled POP in Luxembourg

POST Luxembourg had been operating a SixXS POP since March 2010. The POP worked fine for a time and some members of PRMG operated several tunnels. Unfortunately SixXs disabled the POP in 2015 after it had struggled with uptime issues for several weeks. A sad day for IPv6 in Luxembourg.

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2014/12/09
by Marc
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LX0APD is on air

During Summer I started experimenting with different setups for a APRS Digi. In September I found very good hardware components from DC4ZZ & DB3FAT. I installed the system beginning of September on VHF and UHF using a temporary antenna and the callsign LX1DUC-4. On December 9, 2014 I received my license for the callsign LX0APD. The callsign LX0APD-4 is now on air as an APRS iGate and fill-in digipeater on VHF (144,800 MHz) and UHF (432,500 MHz) using a extremely low TX power of 16dbm.

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2014/10/14
by Marc
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Critical FreePBX RCE Vulnerability (ALL Versions)

A critical vulnerability was found in FreePBX and CVE 2014-7235 was released on September 30, 2014. An article on FreePBX.org explains all the details. If’ you’re running a FreePBX system be sure to read and act if you haven’t done so already.

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2013/11/11
by Marc
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Why T.38 is not the solution

As VoIP gets more and more popular, it’s users are struggling how to deal with their existing needs for fax services. Some may just connect their fax machine to an analog telephone adapter (aka ATA) and send their fax transmissions via their ITSP. While some may experience random success with this setup, most will experience an unacceptable high failure rate. The T.38 protocol was thought to be THE solution for fax over VoIP as T.38 uses data packets instead of analog modulation but it has its share of issues as well.

So what is the problem? Continue Reading →

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