IP Telephony – bit rates of audio formats, and other notes
The bit rates for the most common audio formats – ALAW 8 BITS ULAW 8 BITS PCM 16 BITS SIGNED/UNSIGNED ADPCM 8 BITS The endian-ness for more than one byte system...
Author: Sreekumar Kj
Sreekumar (KJ) has been a hobby programmer from school days. Codemarvels is his personal blog from the year 2010, where he writes about technology, philosophy, society and a bit about physics.
He now runs a conversational AI company - DheeYantra - focusing his efforts to help businesses improve operational efficiency using digital employees powered by AI.
Fix : Docker node down after restartIP Telephony – bit rates of audio formats, and other notes
The bit rates for the most common audio formats – ALAW 8 BITS ULAW 8 BITS PCM 16 BITS SIGNED/UNSIGNED ADPCM 8 BITS The endian-ness for more than one byte system...
Fix: Cannot start container Subnet sandbox join failed error from docker
Error : Few docker containers don’t start up. In the /var/log/syslog they give the error “Cannot start container Subnet sandbox join failed…” Fix: Restart the m...
React Ajax call on load gives : “Error: Should not already be working.”
Problem : On page refreshes, the ajax calls in the componentDidMount functions throws the error : “Error: Should not already be working.” Reason : Probably the ...
Fix : The repository ‘http://archive.ubuntu.com/ubuntu disco-backports Release’ no longer has a Release file.
Issue : When doing an apt update, we get the this error.The repository ‘http://archive.ubuntu.com/ubuntu disco-backports Release’ no longer has a Release file. ...
Cannot connect to DB from a process inside Docker container ? This could fix it.
I had recently hit a blocker to production deployment, when my processes just won’t connect to my Cassandra DB from within their containers. This is how I could...
Open ports in Ubuntu’s firewall using IP Tables
On the terminal, do the following to open port 80 sudo iptables -A INPUT -p tcp --dport 80 -j ACCEPT sudo iptables -F Persisting the rule changes across boot cy...
Make a new disk available in Ubuntu on AWS or Azure
To make a new disk you just added to the Ubuntu device, please go through the following steps – Check whats the /dev path of the disk. On terminal, run- You wou...
host-name getting reset after a reboot
Problem: The newly set hostname reverts back to older one after reboot Reason : Hostname is reset by cloud-init Solution : Inactivate cloud-init. On t...
Ubuntu : retain host-name change after a reboot
Problem: The newly set hostname reverts back to older one after reboot Reason : Hostname is reset by cloud-init Solution : Inactivate cloud-init. On terminal, k...