How to remove “New User” in Asterisk CallerID

I noticed once that when incoming calls from the Goip4 gateway on SIP phones, not only the caller’s number is displayed, but the name “New User” flashes alternately with the phone number, which is obviously superfluous and hinders.

After viewing the Asterisk configuration files, I noticed some standard values in the /etc/asterisk/users.conf file in the general section, namely:

[general]
fullname = New User

Which need to comment out:

;fullname = New User

And restart Asterisk to apply the changes:

sudo service asterisk restart

Done, now with incoming calls only the phone number will be displayed.

Installing and using trafshow

trafshow – a utility for displaying traffic statistics passing through network interfaces.

Since the utility is included in the Netdiag (Net-Diagnostics) set, everything is installed together.

You can install Netdiag and trafshow in Ubuntu / Debian using the following command:

sudo apt-get install netdiag

In CentOS/RedHat/Fedora:

sudo yum install netdiag

Command viewing guide:

man trafshow

Simple launch:

sudo trafshow

I’ll describe the possible startup options:
-v (view the version of the program)
-n (do not convert the addresses into DNS names, and port numbers for example 80 in http, etc., in the running program, you can toggle the option with the N key)
-a len (summarizing traffic flows using the IP prefix IP netmask len, in the program is switched by pressing the A key)
-с conf (using an alternative color configuration instead of the standard / etc / trafshow)
-i name (indication of the network interface)
-s str (search for an item in the list and go to it)
-u port (listening to the specified UDP port for Cisco Netflow, the default number is 9995, to disable use 0)
-R refresh (update interval, default 2 secs, in the program is changed with the R key)
-P purge (cleaning of obsolete records after the specified time, by default 10 seconds, in the program is changed by the key P)
-F file (using a file for filters)
expr (what packages will be displayed, if not specified, then all)

Installing and using softflowd

Softflowd – NetFlow network traffic analyzer.

You can install in Ubuntu/Debian using the command:

sudo apt-get install softflowd

After installation, you need to open its configuration file, for example, in the nano editor (Ctrl+X for exit, y/n for saving or canceling changes):

sudo nano /etc/default/softflowd

And specify the parameters, for example:

INTERFACE="any"
OPTIONS="-n 192.168.1.40:5556"

After the changes, perform a restart:

sudo /etc/init.d/softflowd restart

Let’s look at the statistics of softflowd:

softflowctl statistics

If it is not running, there will be an error:

ctl connect(“/var/run/softflowd.ctl”) error: Connection refused

Display information about all monitored threads:

sudo softflowctl dump-flows

Information about softflowctl can be viewed by the command:

man softflowctl

I’ll describe other startup options:
-n (specify the network node and port on which will work softflowd)
-i (interface on which will work softflowd)
-r pcap_file (reading information from a file, not a network interface)
-p pidfile (alternative location for storing the process identifier, standard /var/run/softflowd.pid)
-c ctlsock (alternative location for the socket, standard /var/run/softflowd.ctl)
-m max_flows (maximum number of threads for simultaneous tracking)
-6 (consider also IPv6 data)
-D (debug mode)
-T track_level (level of tracking, can be full, proto, ip)
-v netflow_version (netflow version)

Linux snmp OIDs

Example for check:

snmpget -v 1 -c "public" localhost .1.3.6.1.2.1.1.3.0

System load:
In 1 minute: .1.3.6.1.4.1.2021.10.1.3.1
In 5 minutes: .1.3.6.1.4.1.2021.10.1.3.2
In 15 minutes: .1.3.6.1.4.1.2021.10.1.3.3

CPU:
percentage of user CPU time: .1.3.6.1.4.1.2021.11.9.0
raw user cpu time: .1.3.6.1.4.1.2021.11.50.0
percentages of system CPU time: .1.3.6.1.4.1.2021.11.10.0
raw system cpu time: .1.3.6.1.4.1.2021.11.52.0
percentages of idle CPU time: .1.3.6.1.4.1.2021.11.11.0
raw idle cpu time: .1.3.6.1.4.1.2021.11.53.0
raw nice cpu time: .1.3.6.1.4.1.2021.11.51.0

Memory statistics:
Size of the Swap: .1.3.6.1.4.1.2021.4.3.0
Free Swap Space: .1.3.6.1.4.1.2021.4.4.0
Total RAM: .1.3.6.1.4.1.2021.4.5.0
Used RAM: .1.3.6.1.4.1.2021.4.6.0
Free RAM: .1.3.6.1.4.1.2021.4.11.0
Total RAM Shared: .1.3.6.1.4.1.2021.4.13.0
Total RAM Buffered: .1.3.6.1.4.1.2021.4.14.0
Total Cached Memory: .1.3.6.1.4.1.2021.4.15.0
Mount point: .1.3.6.1.4.1.2021.9.1.2.1
Mount the device for the partition: .1.3.6.1.4.1.2021.9.1.3.1
Total disk/partition size in kilobytes: .1.3.6.1.4.1.2021.9.1.6.1
Free disk space: .1.3.6.1.4.1.2021.9.1.7.1
Used disk space: .1.3.6.1.4.1.2021.9.1.8.1
Disk space used as a percentage: .1.3.6.1.4.1.2021.9.1.9.1

Uptime system: .1.3.6.1.2.1.25.1.1.0
SNMP uptime: .1.3.6.1.2.1.1.3.0

See also:
SNMP OID and MIB for interfaces

How to convert audio files to ulaw, alaw, gsm, g722, etc. for Asterisk

After ordering the voice acting from a professional announcer and cutting in the sound editor, it was necessary to save the sounds in different formats, the original was in wav, so I’ll give an example of converting through sox (it already was in the system with Asterisk):

sox -V vm-intro.wav -r 8000 -c 1 -t ul vm-intro.ulaw
sox -V vm-intro.wav -r 8000 -c 1 -t al vm-intro.alaw
sox -V vm-intro.wav -r 8000 -c 1 -t gsm vm-intro.gsm

The codec g722 does not seem to support it, at least in man sox did not find it, so it installed ffmpeg (on the Ubuntu Server system):

sudo apt-get install ffmpeg

And performed the conversion:

ffmpeg -i vm-intro.wav -ar 16000 -acodec g722 vm-intro.g722

Standard directory with Asterisk sounds – /usr/share/asterisk/sounds

Installation and configuration of the IRC server – ircd-irc2

On the test I will launch IRC (Internet Relay Chat) server ircd-irc2 in Ubuntu Server 14.04.

The first command is to install the IRC server in Ubuntu:

sudo apt-get install ircd-irc2

There are several configuration files in the /etc/ircd/ directory: /etc/ircd/ircd.conf (main), /etc/ircd/ircd.motd (message to users when connecting), /etc/ircd/iauth.conf (connection parameters ).
In the /usr/share/doc/ircd-irc2/ directory, you can see examples of configuration files.

After the changes in the configuration files, you must reboot the IRC server:

sudo /etc/init.d/ircd-irc2 restart

Users can create and connect to channels with this command:

/join #channel_name

Installing Tarantool in Ubuntu

To install Tarantool in Ubuntu, execute the following commands:

sudo apt-get update
sudo apt-get install tarantool

I installed version 1.5 on the test, and the newest at that time was 1.7rc (the version can be viewed on the official site by the link below), so update the sources:

curl http://download.tarantool.org/tarantool/1.7/gpgkey | sudo apt-key add -
release=`lsb_release -c -s`
sudo apt-get -y install apt-transport-https
sudo rm -f /etc/apt/sources.list.d/*tarantool*.list
sudo tee /etc/apt/sources.list.d/tarantool_1_7.list <<- EOF
deb http://download.tarantool.org/tarantool/1.7/ubuntu/ $release main
deb-src http://download.tarantool.org/tarantool/1.7/ubuntu/ $release main
EOF

And we will perform the installation of the newest version, if the installation of Tarantool has already been performed, the update will be:

sudo apt-get update
sudo apt-get -y install tarantool