How data will be converted to packets in voice over LAN?

[asmat_ali]

when the voice from the microphone goes to the sound card the soundcard will digitize it and will be stored in the in buffer and then will be transmitted to the other PC that is on the LAN, so there is no need to apply any comprssion technique on it because we are not sending any file that is of constant size, we are transmitting the voice at the real time , so can i find any help about the how our data will be pactized (converted to the packets) means what is the role of OSI model.Functionalities of the seven layer of the OSI model while transmitting the data over the LAN

 

[spikeyang]

Voice over LAN

The voice is sampled at a rate ,say, 8kHz, 8-bit, which means a 64kbps stream. Every packet should have a delay less than 200ms to keep the communication quality.
Please find more materials.

 

[ebook123456789]

Voice over LAN

the data packetize should be in 2nd layer, data link layer.

 

[mhamed]

Voice over LAN

Network card will packetize the data. Network card in your computer fulfill MAC and PHY layer of OSI model. BTW, your question is not clear. plz rewrite it in a more clear format

 

[kingpatour]

Re: Voice over LAN

-Providing a speech signal of predetermined bandwidth in analog signal format (at first location).
-Periodically sampling the speech signal at a predetermined sampling rate.
-Representing the samples in a digital format which is binary digital samples.
-Dividing the binary digital samples into groups arranged using a sequence.
-Transforming minimum at least two of the binary digital samples into corresponding frames of digital compression

-The next step is the suppression of unwanted signals and compression of the voice signal and this has two stages:
1- The system examines the recently digitized information to determine if it contains a voice signal or only ambient noise and discards any packets that do not contain speech
2- Complex algorithms are used to reduce the amount of information that must be sent to the other party. Sophisticated codecs enable noise suppression and compression of voice stream.

Voice must be packetized and VOIP protocols added, these protocols are added to facilitate its transmission through the network(e.g. each packet need to contain the address of the destination, also a sequencing number in case that the packets are not received in a proper order also an error check area )