Cisco and Annex M ADSL in the UK

[bigredshark]

Thanks for the input, I had an inkling that it could boil down to BT's kit, sadly some of our links need to stay on ADSL for cost purposes and we could really do to leverage the speed of ADSL2+ Annex M.

I will try and get an LLU provider circuit installed and see if that shows us 'the light'.

Ahh well, anyone blow me a fiber?

//TrX

It obviously depends who they use for their DSLAMs, I believe be* use Alcatel, who are one of the better manufacturers in my opinion. BT have always used a variety, mainly because when they got into it their purchasing power was big enough that using one provider would have distorted the market. They tend to keep in one make in each exchange at least (though not always I've discovered).

 

[TrX]

It obviously depends who they use for their DSLAMs, I believe be* use Alcatel, who are one of the better manufacturers in my opinion. BT have always used a variety, mainly because when they got into it their purchasing power was big enough that using one provider would have distorted the market. They tend to keep in one make in each exchange at least (though not always I've discovered).

Vendor ID: 'STMI' 'TSTC'

Any idea on the STMI Vendor ID?

//TrX

 

[bigredshark]

Vendor ID: 'STMI' 'TSTC'

Any idea on the STMI Vendor ID?

//TrX

STMI is ST Micro, who made chipsets only. To my knowledge only older Alcatel gear uses them, newer ones still use ST Micro chipsets but they carry Alcatel vendor ID (ALCB or BCLA).

TSTC is texas instruments as used by absolutely everyone (Ericsson, Marconi and Huawei at least on the DSLAM side)

Infineon (IFTN) are only used by Hauwei at the moment.

Broadcom (BDCM) are only used by Ericsson

Analog Devices (ANDV) are used by a heap of people but not widely in the UK to my knowledge.

The only other one of note which springs to mind is Globespan which powers NEC DSLAMs, as used by easynet...

All of these come with the big caveat - 'when I was last working with it' and I may have got some of the identifiers wrong...

 

[nrh1703]

Infineon (IFTN) are only used by Hauwei at the moment.

my experience doesn't relate to annex-m gear but i've found the following.

Back in June last year there was a [firmware] update to these BT DSLAMS that caused problems with cisco equipment. I got in touch with cisco about it but they were hopeless in understanding the problem leave alone finding a solution.

Other DSLAMS should be ok afaik.

 

[#Chri5#]

my experience doesn't relate to annex-m gear but i've found the following.

Back in June last year there was a [firmware] update to these BT DSLAMS that caused problems with cisco equipment. I got in touch with cisco about it but they were hopeless in understanding the problem leave alone finding a solution.

Other DSLAMS should be ok afaik.

I saw that too. One day a Cisco 857 worked, the next day it didn't - it just couldn't sync. The same router with the same config was fine on other lines.

IIRC, the exchange side vendor was being reported as "P".