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Cisco 877 DSL firmware

Hi

I want to use a Cisco 877W on a UK BT ADSL 2+ Annex A DSL service.

I know there have been challenges with this router on UK BT lines.   I see there is a specific DSL firmware release - 0.0.026 for BT lines, which is dated Nov 2011.  However there is a later release dated December 2012 version 6.0.010 

Could anyone at Cisco please tell me if the 6.0.010 release also contains all of the fixes from 0.0.0.26, as the version numbers for this firmware seem to vary out of sequence.

Also does 6.0.010 support Annex A?                  

1 REPLY

Re: Cisco 877 DSL firmware

From release notes, both firmwares are derived from version 4.0.15. I suggest you to use 0.0.026 version.

################### 6.0.010 Release Notes #########################

Release Notes:  ST Micro xDSL 20190 Firmware

Version:  6.0.009 / 6.0.010

Firmware is available at:  ftp://ftpeng.cisco.com/ftp/k56-alpha/st_micro/firmware/v0_x/adsl_alc_20190_6.0.010.bin

The following ADSL DMT engine chips are supported by this release:

- ST20196-AB, ST20196P-AA and ST20196P-AB

Resolved Issue:

CSCub31568    877 & 1801 Annex-M flaps in short loops agains Alcalte NALT-C & NALT-J 
CSCty84079    C887M/C877M ADSL Annex M line sync failure 

Base Firmware Build:  4.0.015
Changes:

6.0.009

TxFilter - Short Loops Filter Addition
OLR Upstream Message Flooding from DSLAM Handler Addition

6.0.010

6.0.009 + 0.5 INP forced US/DS for added link integrity

#################### 0.0.026 Release Notes ##################

CISCO - ST Microelectronics

DSL Modem Firmware Release Notes

AMR-0.0.026

Stability Build

15-September-2011

Ram Parasuraman

raparasu@cisco.com

Carla Kochmann

ckochman@cisco.com

I.  General

AMR-0.0.026 is a production grade release of the CPE firmware of the ADSL physical-layer system designed and implemented by Cisco engineers working in collaboration on site in the Service Provider Acceptance Test Facilities.

This firmware is based on version 0.0.017 (Major Version 4.0.015)

The fixes added to this firmware will not affect meeting the ITU requirements for PSD or any other ITU requirements.

This firmware is intended specifically for deployment at British Telecom as it contains specific interoperability changes to address issues observed during testing vs DSLAMs at this operator in operating modes ADSL1/ADSL2+ Annex A.

It applies to the following CPE ADSL2+ Chipset: ST20190.

It operates according to the following standards: ITU G.992.1, ITU G.992.3, ITU

G.992.5 Annex A.

Depending on the standard, it can operate for POTS and/or ISDN.

The current release base is qualified for the DFE3.0 (full TR-067 eBOM) and for

DFE2.6 with the ST20196-AB, ST20196P-AA and ST20196P-AB digital chips.

II. Product Identification

Supported chipset

Analog ASIC identification

The following ADSL Analog Front End chip is supported by this release:

- ST 20184 CA-I1

Digital ASIC identification

The following ADSL DMT engine chips are supported by this release:

- ST20196-AB, ST20196P-AA and ST20196P-AB (AHB configured in 35 MHz mode).

This software should also be functional with ST20196-AAA (AHB configured in 70

MHz mode) and ST20196-AB (AHB configured in 70 MHz mode) but this not explicitly

verified during the validation of this release.

BOM identification

• DFE 3.0 annex A/L: allows to fully pass TR-067 (and TR-048)

The current Modem Firmware release supports with indicated maturity:

- ST20184/ST20196 with DFE 3.0 BOM.

The firmware auto-detects the BOM version depending on the values of the resistors connected to the pins T1N/T1P of the ST20184:

R_5V_T1N

R_T1P_GND

R_5V_T1P

R_T1N_GND

DFE 3.0 Annex A Qualified Qualified 16K 22K

Control-E reference

The operation of the runtime software is described in detail in the “ADSL CPE

Control Interface Specification CTRL-E” (Rev 7.0).

III. Changes compared to AMR-4.0.015 (MR15)

* Resolves REIN/SHINEtesting vs Huawei & Fujitsu DSLAM (INFN)

* Resolves Fujitsu UK DSLAM issues with no support for Segmented Bitswap Message (TSTC)

* Resolves OLR Defer/Delay being sent late (ALL)

* Resolves ADSL1 issues for Bitswaps (ALL)

* Resolves Link Rate Failure to Train on BANDED PROFILES (ALL)

* Resolves Stockholm Noise Acceptance Test Issues (ALL)

* Resolves Link Freezing with DATA Lock Up, CRC Error Recovery (ALL)

* Resolves Proper NM Margin Display to be Current Average (CPE)

* Reduced Link Train Up Times

IV. QUALIFICATIONS

Lab testing across all network models and profiles continuing successfully.

Field trials proceeding on select, known historically challenging lines.

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