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17th April 2003 at 17:57 #24206mikeGuest
How many Megabytes or Kilobytes are used in a 1 minute phone call using Voip (average)?18th April 2003 at 02:35 #24207nonameGuest
Depending on the codec used, from 5.4 kb to 64 kb.if you use 64 kb ,you are running without compression, the same way that carriers had been doing it for 30+ years. if you use lower bit ratio ,you are compresing the voice, with the unavoidable decrese on quality.
when you see that you are running 8 kb codec, remember that there is some overhead.
On real life the normal bandwith goes from 10-12 kb per call and up to 15-20 kb with the overhead.
At those rates you will be hard pressed to notice any diference on the quality of a call versus the normal PSTN network.22nd April 2003 at 16:23 #24208Jose QuinteroGuest
asuming tha the person will speak for a 1 minute witout silence.
You will have
Codec G.723.1 = 125 Kbytes
Codec G.729 = 176 Kbytes
Codec G.711 = 586 Kbytes
JIQ12th May 2003 at 09:14 #24209chrisGuest
Jose, i use h323?13th May 2003 at 00:27 #24210JOSE QUINTEROGuest
The codec does not depend of H.323.
Bu if yua are using H.323. Those will be the values
JIQ13th May 2003 at 12:09 #24211chrisGuest
I use 729, but the carrier tells me that is about a meg a minute? my ISP allows 3000 megs a month. Is the itsp wrong in telling me 1M/min?13th May 2003 at 12:22 #24212Tom HGuest
No, your ISP are about right. After IP overheads, you can expect about 1.44Mb per minute (that’s megaBITS). This equals 180kB per minute (that’s kiloBITS).
Be careful not to confuse bit and bytes. I agree with Jose’s figures, but these are in bytes.
There are eight bits in a byte.14th May 2003 at 02:54 #24213JOSE QUINTEROGuest
Tom is totally right