User`s guide

Chapter 54 ADSL Commands
IES-612-51 User’s Guide
340
The service type in operation is the ADSL standard that the port is using: G.dmt or ANSI
T1.413 issue 2.
Trellis coding helps to reduce the noise in ADSL transmissions. Trellis may reduce throughput
but it makes the connection more stable.
3
The numbers of milliseconds of interleave delay for downstream and upstream transmissions
are listed. The total output power of the transceiver varies with the length and line quality. The
farther away the subscriber’s ADSL modem or router is or the more interference there is on
the line, the higher the power will be. “DS” refers to the power output of the IES-612-51 “US”
refers to the power output of the subscriber’s ADSL modem or router.
Information obtained prior to training to steady state transition will not be valid or will be old
information.
The atuc information fields show data acquired from the ATUC (ADSL Termination
Unit – Central), in this case IES-612-51, during negotiation/provisioning message
interchanges.
The atur information fields show data acquired from the ATUR (ADSL Termination
Unit – Remote), in this case the subscriber’s ADSL modem or router, during negotiation/
provisioning message interchanges. This information can help in identifying the subscriber’s
ADSL modem or router.
The vendor ID, vendor version number and product serial number are obtained from vendor
ID fields (see ITU-T G.994.1) or R-MSGS1 (see T1.413).
54.4.4 Lineperf Command Example
An example is shown next.
These counters display line performance data that has been accumulated since the system
started. In the list above the definitions of near end/far end will always be relative to the ATU-
C (ADSL Termination Unit-Central Office). Downstream (ds) refers to data from the ATU-C
and upstream (us) refers to data from the ATU-R. “I” stands for interleaved and “ni” stands for
non-interleaved (fast mode).
3. At the time of writing, the IES-612-51 always uses Trellis coding.
Figure 160 Lineperf Command Example
ras> statistics adsl lineperf 1
[port 1] Perf since boot up
nfebe-I/nfebe-ni : 46/ 0 (Far End CRC)
ncrc-I/ncrc-ni : 5/ 0 (Near End CRC)
nfecc-I/nfecc-ni : 0/ 0 (Far End Corrected FEC)
nfec-I/nfec-ni : 28/ 0 (Near End Corrected FEC)
init-atuc/init-atur: 23/ -
es-atuc /es-atur : 27/ 92
ses-atuc /ses-atur : 26/ 60
uas-atuc /uas-atur : 1515/ 1515
lpr-atuc /lpr-atur : -/ 2