Hello,
We were trying to connect a Cisco 877 to a Versatel DSLAM, but were unable to get a line sync. So we opened a TAC-case, and got the answer quoted below.
So does anyone know why Versatel is using the G.992.2 ITU G.Lite in their DSLAM's (type Copper Mountain)?
Is G.992.2 ITU G.Lite a new DSL standard, or is it already becomming obsolete?
Does anyone know if the other DSL-providers in The Netherlands (KPN, BBned etc.) are considering to use the G.992.2 ITU G.Lite standard?
We need this information because we are now forced to decide between Cisco and Versatel.
Ronald de Leeuw
:
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As far as I am aware there are no plans to support G.lite on 877.
As Cisco SOHO97 supports the next:
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Cisco SOHO 97 ADSL Specifications
ST-Micro (formerly Alcatel Micro) DynaMiTe ADSL Chipset . T1.413 ANSI ADSL DMT issue 2 . G.992.1 ITU G.DMT support . G.992.2 ITU G.Lite support . G.992.3 ITU G.hs ADSL type negotiation . TR-048
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The 877 supports.
ST-Micro DynaMiTe (formerly Alcatel Micro Electronics) ADSL Chipset (20190) . T1.413 ANSI ADSL DMT issue 2 . G.992.1 ITU G.DMT support . G.992.3 ITU G.hs ADSL type negotiation . G.992.3 (ADSL 2)/G.992.5 (ADSL2+) . DSL Forum TR-067
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Common on SOHO 97 and Cisco 877
. T1.413 ANSI ADSL DMT issue 2
. G.992.1 ITU G.DMT support
. G.992.3 ITU G.hs ADSL type negotiation
So as long as the DSL line is G.992.1 you are fine.
How do I determine for sure that
> the DSLAM is
> using ITU G.992.2 (G.Lite)?
>
From the 827/837/Soho97 You can see it:
gtv97#sh dsl int atm0
ATU-R (DS) ATU-C (US)
Modem Status: Showtime (DMTDSL_SHOWTIME)
DSL Mode: ITU G.992.2 (G.Lite)
If the Cisco 877 is not going to work in this specific
> situation then that
> would be a very great dissapointment to us. This means we're
> not able any
> more to offer our customers the newer models of Cisco routers
> for connecting
> to Versatel DSL-lines over here in the Netherlands.
>
Please take this up with your local Cisco Sales Team.
They can help you raising a business case for supporting
G.lite on newer products in the future.
And what about the new DSL HWIC's, will they support ITU
> G.992.2 (G.Lite)
> (or are they using the same DSL-chip as the Cisco 877)?
>
The latest new WIC-card is the ADSL HWICs.
4ed9a.html#wp1027129
ADSL Features
Supported ADSL features are as follows:
.HWIC-1ADSL and HWIC-1ADSLI provide ADSL high-speed digital data
transmissions between the customer premises equipment (CPE) and the central
office (CO).
.HWIC-1ADSL supports ADSL-over-POTS (ADSL, ADSL2, and ADSL2+), complying
with Annex A of ITU G.992.1, G.992.3, and G.992.5.
.HWIC-1ADSLI supports ADSL-over-ISDN (ADSL, ADSL2, and ADSL2+), complying
with Annex B of ITU G.992.1, G.992.3, and G.992.5. It also supports and
complies with ETSI 101-388 and the Deutsche Telekom U-R2 specification.
.HWIC-1ADSL and HWIC-1ADSLI support reach-extended ADSL2, complying with
Annex L of ITU G.992.3.
.HWIC-1ADSL and HWIC-1ADSLI comply with ANSI T1.413 issue 2.
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It does NOT support G.lite.
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