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Service Provider Challenges and Needs
With higher bit rates and triple-play
services, the performance required
from DSL lines is rising dramatically.
Lines are being operated closer to their
bit rate limit while real-time voice and
video services are requiring greater
line stability. As a result, you will need
to put the right tools and processes
in place to prevent escalating OPEX,
while keeping customers happy.
Figure 1. More real-time and quality-sensitive services
20 Mb/s
Music download
5 Mb/s
1 Mb/s
Surfing e-mail
asynchronous
Support more quality sensitive services
DSL technology has enabled you to deliver triple-play
services more cost effectively. Video and voice as well
as new multimedia services tend to become more
demanding in terms of bandwidth, latency and error
rate, making them more sensitive to the line quality.
Despite advances in DSL technology, DSL technology
does have its limits. A DSL line capable of supporting
High Speed Internet may be unable to support more
quality-sensitive services such as IPTV or VoIP. Prob-
lems may arise from the poor condition of the loop itself
(e.g., contact problems, crosstalk, interference, etc.) or
from service demands that exceed the loop's capability.
Best effort
File sharing
Online gaming
Sporadic
Traffic characteristics
Real time and
quality sensitive
HDTV
SDTV
Videophones
VoIP
Real time
latency sensitive
Alcatel-Lucent 5530 Network Analyzer
3
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