ZyXEL Communications IES-1248-71, Руководство пользователя

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Chapter 55 ADSL Commands
IES-1248-71/73 User’s Guide
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An example is shown next.
The service type in operation is the ADSL standard that the port is using. The IES-1248-71/
71A uses G.lite, G.dmt, ANSI T1.413 issue 2, ADSL2, or ADSL2+. The IES-1248-73 uses
G.dmt Annex B, ETSI, ADSL2, or ADSL2+.
Trellis coding helps to reduce the noise in ADSL transmissions. Trellis may reduce throughput
but it makes the connection more stable.
4
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-1248 “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-1248, 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).
Figure 250 Lineinfo Command Example
ras> statistics adsl lineinfo 8
[port 8]
operating modes:
- service type in operation: adsl2+
- TRELLIS operation mode : on
connection detail:
- down/up stream interleaved delay (ms): 3/ 2
- total transceiver DS output power (dbm): -2.5
- total transceiver US output power (dbm): 11.5
atuc information:
- vendor id: 30304235303035300000000000000000
- version number: 66323330323030300000000000000000
- serial number :
30323030306530336539303030370000000000000000000000000000000000
00
atur information:
- vendor id: b5004244434d00000000000000000000
- version number: 41327042303139610000000000000000
- serial number :
0000000000000000000000000000000000000000000000000000000000000000
4. At the time of writing, the IES-1248 always uses Trellis coding.