Shdsl With Catnet

[Tod]

I heard about that option, apparently it's different from ADSL and it's supposed to be fast and reliable...

Anybody knows something about it?

[Brew]

Sorry Tod, I have no idea.

But I am also interested in SHDSL.

If you subscribe to it, could you please give us some further information?

Thanks a lot.

[Prasert]

G.SHDSL uses a different line encoding than ADSL. Major differences: maximum speed 2.3Mbps upload and download over a pair of copper wires. Maximum distance 11km.

ADSL routers will of course not work with g.shdsl, a different router is required!

[NHJ]

actually there's no improvement in the distance :

144 K

5.300 m

272 K

4.600 m

528 K

4.000 m

1040 K

3.700 m

2064 K

3.000 m

it's simply it's allowing symetric down and up .

Edited November 3, 2008 by NHJ

[dotcom]

Hey Tod. What's the price?

[monty]

Hey Tod. What's the price?

2,600 Baht +7% vat...

http://www.cat.net.th/hinet/promotion.html

[Prasert]

actually there's no improvement in the distance :

144 K

5.300 m

272 K

4.600 m

528 K

4.000 m

1040 K

3.700 m

2064 K

3.000 m

it's simply it's allowing symetric down and up .

I guess you copied a table from a website? I can show you several g.shdsl lines performing at 2.3Mbps over 3km+ copper lines. ADSL does however degrade rapidly around 3km distance, so there is an improvement in distance.

Example output of a g.shdsl router, connected behind a 3.5km copper line (0.9mm) - standard outdoor Thai phonecable:

tao-rt16#sh controllers dsl

DSL 0 controller UP

SLOT 0: Globespan xDSL controller chipset

Frame mode: Utopia

Configured Line rate: 2304Kbps

Line Mode: Two Wire

DSL mode: SHDSL Annex B

Line Re-activated 0 times after system bootup

LOSW Defect alarm: ACTIVE

CRC per second alarm: ACTIVE

Line termination: CPE

Current 15 min CRC: 451

Current 15 min LOSW Defect: 0

Current 15 min ES: 396

Current 15 min SES: 0

Current 15 min UAS: 17

Previous 15 min CRC: 0

Previous 15 min LOSW Defect: 0

Previous 15 min ES: 0

Previous 15 min SES: 0

Previous 15 min UAS: 0

Line-0 status

Chipset Version: 0

Firmware Version: R3.0.1

Modem Status: Data, Status 1

Last Fail Mode: No Failure status:0x0

Line rate: 2312 Kbps

Framer Sync Status: In Sync

Rcv Clock Status: In the Range

Loop Attenuation: 7.9 dB

Transmit Power: 13.5 dB

Receiver Gain: 24.7420 dB

SNR Sampling: 39.6570 dB

Dying Gasp: Present