Wired telephone bandwidth

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Cable, you retarded fucking ditz.

Oh, now you're bragging that your little dick is a cable.

If you were any more dirt dumb, I'd
swear that you were related to the Thompson retard.

That's the nicest thing you've said to anyone, but you're AlwaysWrong.

 

[JosephKK]

JosephKK wrote:



I have no idea what are you babbling about, however V.34 provides symbol
rates of up to 3.429k, with 960-point constellation.


Vladimir Vassilevsky
DSP and Mixed Signal Design Consultant
http://www.abvolt.com

Try V.90 and V.92, Huge constellations, requires very good SNR.
I may not have enough bits per symbol though. V.34 does not have quite
the bitrate of so called 56K modems. Of course, the transmitted
symbol stream is compressed then scrambled from the incoming data stream.

 

[JosephKK]

Huh?

V.90 is V.34-like uplink and 8 kbaud 8 bit downlink.
V.92 is 8 kbaud 8 bit both ways.


Bla-bla-bla ?


VLV

Not that i consider Wikipedia a proper reference source, but check the stated speeds:

http://en.wikipedia.org/wiki/ITU-T_V-Series_Recommendations

V.34 seems to be 28kpbs both ways, a bit short of V.90 56kbps down 33.6 kbps up.
Haven't had my hands on any of the actual standards for many years.

 

[JosephKK]

Just got a notice from Cox, new speeds (CHSI Premier)... 20Mbps
download / 4Mbps upload, and I think the actual upload is actually
faster than claimed.

...Jim Thompson

Wonderful for you. But those are seriously different modems and line conditions.

 

[Martin Brown]

Not that i consider Wikipedia a proper reference source, but check the stated speeds:

http://en.wikipedia.org/wiki/ITU-T_V-Series_Recommendations

V.34 seems to be 28kpbs both ways, a bit short of V.90 56kbps down 33.6 kbps up.

There was an important difference. On most lines you had a sporting
chance with V.34 of getting the top speed. On a V.90 connection you were
doing well to get more than 80% of top rated speed in either direction.

Haven't had my hands on any of the actual standards for many years.

By the time 56k chipsets were around the analogue V.34+ (1996) was
capable of 33k6 both ways on a good day. On a DACSd line V.34 was always
better than 56k because it tolerated the signal abuse better.

On a good line the 56k modem would be something like 50k down and 28k
up. So for uploading big files it was worth forcing a V34+ connection.

Regards,
Martin Brown