What is voice over ip

What is voice over ip

All you need to know about VOIP

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VoIP , or VoIP (Voice over IP) is a technique for communicating orally over IP-enabled networks , whether private networks or the Internet. , wired (cable / ADSL / optical) or not (satellite, wifi, GSM) . This technology is most often used to support.

How is the voice transported?

The transport of voice over IP is relatively complicated. The first step is the digitization (coding) of the acoustic signal. Then, the information is divided into frames (blocks of information) that can circulate on a computer network. Many protocols can then be used to route the information to the recipient (s).

How is the voice coded?

In a conversation, the voice produces sounds at different frequencies .

Thanks to these constant frequency changes, we perceive emotions and intonations. This multitude of frequencies would be remarkable by a sinusoidal display if one visualized his signal on an oscilloscope.

The voice causes a sinusoidal signal, which is analog . However, to pass it over a TCP / IP (Digital) network, it will be necessary to convert this signal (analog to digital) in PCM (Pulse Code Modulation) format to 64 kb / s.

Once converted, it is necessary to compress the voice (digitized) through a codec (Compressor / Decompressor) to insert it into an IP packet. This coding must offer the best possible voice quality for the lowest bit rate and compression delay possible. There are several coding techniques that are measured in a completely subjective way.

The method of broadcasting Voice over IP:

The term "VoIP" is generally used to describe " point-to-point " communications . For the broadcast of sound or videos over IP in multipoint mode , it is more about streaming for a simple broadcast, as used by web radio for example. The term multipoint is rather reserved for videoconferences.

Globex Teleccom technique can be done in unicast mode (a transmitter and a receiver), broadcast (a transmitter and all receivers without exception) or multicast (a transmitter and several receivers) on networks .

Voice over IP leads to the replacement of traditional telephones with "IP telephones" whose characteristics are:

  • Replacement of telephone jacks (RJ11) with network jacks (RJ45).
  • Replacement of analog or digital interfaces of telephones with the network through an IP protocol interface .
  • The replacement of the traditional telephone signaling protocol by an IP voice system.
  • The replacement of the handset by a new handset having the above characteristics, or by software that can be installed on a computer (with a headset and a microphone).

Accessibility:

An IP voice infrastructure may be available for the same availability zones as traditional telephone systems:

  • In a closed way ( Intranet ): by the use of a private IP central office .
  • In a semi-public way ( Extranet ): by sharing an IP central office with its partners or customers (via a VPN for example = extension of the local network).
  • In a public way but limited (Internet): by an opening on the Internet of the central IP.
  • In a public and open way (Internet): by an opening on the Internet of the central IP and the affiliation of gateway (s) towards the PSTN network .

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7 Things I Wish I Knew BEFORE Moving Into My First Apartment

I've learned quite a few valuable lessons in my first year on my own.

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Last Thanksgiving, I moved out of my childhood home and into my very first apartment. In the just over a year of "adulting," I've learned that I really had no idea what I was getting myself into.

Here are a few things I wish someone had told me beforehand...

1. Bill collectors don't mess around!

If you're as much as a few hours late on paying a bill, expect a letter dropped in the mail and/or an e-mail in your inbox notifying you about it. Stay ahead by keeping a calendar, and write in each bill's due date. Then, place the calendar where you will see it every day — either hang it on your fridge or leave it on your kitchen counter if it's a notebook calendar like the one I have.

If you are looking at the calendar several times a day — even if you are not sitting there and studying it — it becomes less likely that you will miss due dates.

2. The first of each month creeps up QUICKLY

Sometimes it will feel like you JUST paid your rent when it is already due again. Be prepared by having at least a few months' worth of rent saved up.

This way, you will never be late on rent, even if the first of the month catches you off guard (again).

3. It requires constant effort to keep everything in the house stocked

It isn't easy keeping track of everything from toilet paper and toothpaste to trash bags and laundry detergent. And their prices add up quickly! The best way I've found so far to try and not run out of everything I need is by keeping a grocery list and pen on my kitchen counter, right next to my trusty calendar.

When I notice I'm running low on something, such as dishwasher pods, I simply write it on the list. Then, when the list gets long enough, I bring it with me to Wal-Mart and try and get everything I need in one trip.

4. Cleaning is no walk in the park either. 

I am hereby acknowledging my privilege and saying I totally took for granted when my mom, and then the maintenance crew in my college dorm, cleaned my bathroom for me. In order for things not to get out of hand, I keep a handwritten list of everything in my apartment that needs cleaning. And when I clean one thing, I check it off.

Once every item on the list has a checkmark, I re-write a new list for next time. This way, I don't get overwhelmed by trying to clean every single thing in my house all in one day. Instead, I do it little by little when I have the time.

Sure, I'll have a cleaning day now and again, but more often than not I perform one cleaning task a day to keep up with it without tiring myself out after work.

5. You most likely won't get your security deposit back in full

When I first paid my security deposit, I thought to myself, "for sure I will get that back in full whenever I move out." But, I learned that life happens. I've dropped heavy objects and scratched up the wall. I've accidentally burned a spot onto my kitchen table with a burning hot bowl.

I've spilled things onto the carpet that I was unable to get out, even with carpet cleaner. I've also broken things by accident, such as my refrigerator door handle, and the pulley attached to my ceiling fan. I've come to terms with the fact that I won't be getting my security deposit back in full, and that's OK.

That is what it's there for, after all.

6. Coasters are not a want, but a need

When I was growing up, I thought people who insisted you use coasters when you visited their house were annoying. But now I understand. I harass my friends when they come over to always use a coaster. It prevents rings from appearing on the tabletops, which falls under the category of that security deposit we were chatting about earlier.

I recommend buying a pretty set of coasters from a shop like Marshalls. That way, the coasters are nice-looking, and they all match.

7. Housekeeping is a big responsibility

You can't just pick up and LEAVE if you want like you could with your parents. If you want to go on vacation, you still have to pay your bills. You also need to find someone to come care for your pets, bring in your mail, etc.

You are also responsible for turning off your heating/air conditioning when you leave and locking up your doors and windows. You may also be required to have renter's insurance, in the event any damage or break-in happens to your home.

Although housekeeping is a bigger responsibility than I anticipated, I wouldn't give it up for anything in the world. I love having my own apartment, despite the expenses and stresses associated with it. It's the best decision I ever made, and not nearly as frightening as I worked myself up to be.

It is a wonderful journey I know you will do just fine on.

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Exclusive Interview With Soul Singer December Rose

Exclusive Interview With Soul Singer December Rose

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Soul Singer Rosie La Posta who goes under the moniker of December Rose releases the ballad Hanging On. Finding a vocal style of her own, she hits all the notes effortlessly. You can hear past influences but she still keeps contemporary. Think Andra Day'smega smash Rise Up. As far the inspiration behind the song, Rosie says, "Besides the grief of a crumbling relationship, the hardest part in moving on is realizing neither person ever really closed the door. 'Hanging On' really paints the melancholy of the process." She first made waves her first single "Ball Game" which received a New Artist Spotlight award and was featured on AOL/Slacker Radio's "New Pop First" channel. Give it a stream.

Can you tell us a bit about your new song Hanging On?

For sure! So 'Hanging On' is about the "elephant in the room" everyone is ignoring. The relationship is crumbling, no one's letting go and closing the door to that chapter in their lives. The song carries listeners through the reminiscing sweet encounter and desperate plea for truth to set them free.

How would you describe your sound?

Always the hardest question to answer!! haha With all the new music I've been working on, there's been a huge musical maturation. With that said, there is a lot of influence of different genres, but to keep it simple, I'd say Adele meets One Republic, meets Gavin DeGraw, meets Amy Winehouse.

What's your song writing routine like?

This has evolved a ton over the years and still haven't really found a routine. My most creative moments are usually in the mornings, in the shower, and while on public transit around the city. Super random!!! I think on average these are the times my mind has the freedom to just think about anything. So, little melodies or song concepts might come to mind, or lyrics. Sometimes on a great day, all of these things come together at the same time. Little by little I build it. I don't force the song to come together in one day if it's not there. I let the idea "sit on the slow cooker" until it's ready (can be super quick or super long).

Are you playing any shows soon?

With the holidays approaching, no shows for the rest of 2018, but booking for 2019 already so all that information will be up on my website shortly. (https://www.DecemberRoseMusic.com)

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