PEP-292 introduced a nice Python templating feature.
Templates placehoder names are subject to some restrictions,Documentation says:

$identifier names a substitution placeholder matching a mapping key of "identifier".
By default, "identifier" must spell a Python identifier.
The first non-identifier character after the $ character terminates this placeholder specification.

This means that ...

SIPp is a real SIP swiss army knife. You can create various SIP scenario and test your devices and environments.

I never found a SIPp scenario implementing an UAs (User Agent server) registrar with authentication.

Following you can find this scenario:

The SIPp XML scenario file: sipp_register_auth_uas.xml

<?xml version ...

Here you can find a port for Asterisk trunk (rev. 377802) of this patch: http://lists.digium.com/pipermail/asterisk-dev/2011-September/051262.html.
This patch permits to set the codec of an outgoing multicast RTP stream via the variable MULTICAST_RTP_CODEC:

exten => 999,1,Answer()  
exten => 999,n,Set(MULTICAST_RTP_CODEC=alaw ...

Starting from Asterisk 1.8 you can send multicast rtp streams using the MulticastRTP channel driver. There is an open issue that breaks outgoing RTP if the source channel doesn't contains timing informations (Eg. playing an audio file with Dial(MulticastRTP/basic/239.255.255.245:5555,,A(my-announce ...

Vendor specific DHCP options may be provided encapsulated in DHCP option 43.
With this little script you can encode and decode vendor encapsulated option according to RFC 2132.

For example with this command you can tunnel options 66 (TFTP Server), 67 (TFTP Path), 132 (VLAN ID) and 133 (VLAN QOS ...

This little piece of extensions.conf implements a callback from a failed transfer (attendant and unattendant/bind)

exten => _1XX,1,Dial(SIP/${EXTEN},20,tT)
exten => _1XX,n,GotoIf($[ "a${BLINDTRANSFER}" = "a" ]?TransferFailed)
exten => _1XX,n,Set(CALLER=${CUT(BLINDTRANSFER,-,1)});
exten => _1XX,n,Goto(CallBack)
exten => _1XX,n(TransferFailed ...

During last days I played with vtiger: a very customizable and feature rich PHP/MySQL CRM. Sincerely this task has revived my intimate hate for PHP programming language.

This is the idea: add a function hook in vtiger workflow every time that an invoice is created or edited. This function ...

I don't like cloud storage, especially I don't like Dropbox security history.
Anyway Dropbox and others cloud storage are damn cheap and easy to use, I use it for sharing non-important documents.

This little howto explain how you can backup your Dropbox share with Bacula.

First you must ...

I just received a little patch to my pmvcb from Tilman Schmidt.
This patch add the support for the new ESXi syntax of snapshot.remove.

You can download the last pmvcb from my Github page

Thanks Tilman.

Pdmenu is a menu system for Unix. It is designed to be easy to use, and is suitable for a login shell for inexperienced users, or it can just be run at the command line as a handy menu program.

I just modified showdir.pl script in order to implement ...