Call Volume Issues
Due to unprecedented and unforeseen congestion being experienced across carrier voice networks throughout Australia, many networks are experiencing unexpected congestion which is resulting in some Outbound and Inbound calls failing. We are load balancing outbound calls to different carriers. If your having issues please email support@screwlooseit.com.au and we move your outbound call routes to different providers.
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ADSL Tech Info

Introduction

This Page has usefull info for ADSL connections.

ADSL/ADSL2+ Vendor Codes

ALCB = Alcatel (now ST Micro)
ANDV = Analog Devices
BDCM = Broadcom
GSPN = Globespan
IFTN = Infineon
STMI = ST Micro
TMMB = Thomson Multimedia Broadband
P= iPrimus Marconi

DSL Technologies

 

ADSL Standard Common Name Downstream rate Upstream rate
ANSI T1.413-1998 Issue 2
ADSL
8 Mbit/s
1.0 Mbit/s
ITU G.992.1
ADSL (G.DMT)
8 Mbit/s
1.0 Mbit/s
ITU G.992.1 Annex A
ADSL over POTS
8 Mbit/s
1.0 MBit/s
ITU G.992.1 Annex B
ADSL over ISDN
8 Mbit/s
1.0 MBit/s
ITU G.992.2
ADSL Lite G.Lite)
1.5 Mbit/s
0.5 Mbit/s
ITU G.992.3/4
ADSL2
12 Mbit/s
1.0 Mbit/s
ITU G.992.3/4 Annex J
ADSL2
12 Mbit/s
3.5 Mbit/s
ITU G.992.3/4 Annex L
RE-ADSL2
5 Mbit/s
0.8 Mbit/s
ITU G.992.5
ADSL2+
24 Mbit/s
1.0 Mbit/s
ITU G.992.5 Annex L
RE-ADSL2+
24 Mbit/s
1.0 Mbit/s
ITU G.992.5 Annex M
ADSL2+
24 Mbit/s
3.5 Mbit/s

2.1 ADSL
Asymmetric Digital Subscriber Line

ITU G.992.1 – G.DMT – 8.0Mbit/s, 1.0Mbit/s
ITU G.992.2 – G.Lite – 1.5Mbit/s, 0.5Mbit/s
ITU G.992.3/4 – ADSL2 – 12Mbit/s, 1.0Mbit/s
ITU G.992.5 – ADSL2+ – 24Mbit/s, 1.0Mbit/s

2.2 SDSL
Symmetric Digital Subscriber Line

2.3 SHDSL
Symmetric high-speed digital subscriber line
ITU G.991
2.4 VDSL
Very high bit-rate Digital Subscriber Line
ITU G.993.1 – VDSL
ITU-T G.993.2 – VDSL2

Signal Level Guide

3.1 ADSL
Downstream SNR = 15 dB.
Higher is better, minimum = 6 dB.
Downstream Power = < 15 dBm.
Lower is better.
Upstream SNR = 10 dB.
Higher is better.
Upstream Power = < 15 dBm.
Lower is better.
Downstream Attenuation = < 30 dB
Lower is better, maximum = 60 dB.
Upstream Attenuation = < 30 dB
Lower is better, maximum = 60 dB.

3.2 ADSL2+

Downstream SNR = 06 dB.
Higher is not better, within range is better = 05 – 07 dB.
Downstream Power = < xx dBm.
Lower is better.
Upstream SNR = 06 dB.
Higher is not better, within range is better = 05 – 07 dB.
Upstream Power = < xx dBm.
Lower is better.
Downstream Attenuation = < 22 dB
Lower is better, maximum = 22 dB (for 10mbps), 12 dB (for ~25mbps).
Upstream Attenuation = < 22 dB
Lower is better, maximum = 22 dB (for 10mbps), 12 dB (for ~25mbps).

Attenuation to Loop Length Conversion

10 dB ~ 0500 m
15 dB ~ 1000 m
25 dB ~ 2000 m
35 dB ~ 2500 m
NOTE
All readings are based on CPE, with average error margin of CPE taken into considerations.