AAM1212-51/53 Series User’s Guide
362
Chapter 52 ADSL Commands
where
This command shows the line bit allocation of a DSL port.
Discrete Multi-Tone (DMT) modulation divides up a line’s bandwidth into tones. This
command displays the number of bits transmitted for each tone. This can be used to determine
the quality of the connection, whether a given sub-carrier loop has sufficient margins to
support DSL transmission rates, and possibly to determine whether certain specific types of
interference or line attenuation exist. See the ITU-T G.992.1 recommendation for more
information on DMT.
The better (or shorter) the line, the higher the number of bits transmitted for a DMT tone. The
maximum number of bits that can be transmitted per DMT tone is 15.
“upstream carrier load” displays the number of bits transmitted per DMT tone for the upstream
channel (from the subscriber’s DSL modem or router to the AAM1212).
“downstream carrier load” displays the number of bits received per DMT tone for the
downstream channel (from the AAM1212 to the subscriber’s DSL modem or router).
The bit allocation contents are only valid when the link is up.
In the following example, the upstream channel is carried on tones 7 to 39 and the downstream
channel is carried on tones 53 to 259 (space is left between the channels to avoid interference).
<portlist>
=
You can specify a single DSL port <1>, all DSL ports <*> or a
list of DSL ports <1,3,5>. You can also include a range of ports
<1,5,6~10>.
Figure 244
Linedata Command Example
ras> statistics adsl linedata 1
[port 1]
up stream carrier load: number of bits per symbol(tone):
tone 0- 19: 00 00 00 00 00 00 02 03 04 05 - 06 07 07 07 07 07 07 07 08 08
tone 20- 39: 08 08 07 08 08 07 07 06 06 05 - 04 03
down stream carrier load: number of bits per symbol(tone):
tone 0- 19: 00 00 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 00 00
tone 20- 39: 00 00 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 00 00
tone 40- 59: 00 00 00 00 00 00 00 00 00 00 - 00 00 00 01 01 01 01 01 01 02
tone 60- 79: 02 02 02 02 00 02 02 02 02 02 - 02 02 02 02 02 02 02 02 02 02
tone 80- 99: 02 02 02 02 02 02 02 02 02 02 - 02 02 02 02 02 02 02 02 02 02
tone 100- 119: 02 02 02 02 02 02 02 02 02 02 - 02 02 02 02 02 02 02 02 02 02
tone 120- 139: 02 02 02 02 02 02 02 02 02 02 - 02 02 02 02 02 02 02 02 02 02
tone 140- 159: 02 02 02 02 02 02 02 02 02 02 - 02 02 02 02 02 02 02 02 02 02
tone 160- 179: 02 02 02 02 02 02 02 02 02 02 - 02 02 02 02 02 02 02 02 02 02
tone 180- 199: 02 02 02 02 02 02 02 02 02 02 - 02 02 02 02 02 02 02 02 02 02
tone 200- 219: 02 02 02 02 02 02 02 02 02 02 - 02 02 02 02 02 02 02 02 02 02
tone 220- 239: 02 02 02 02 02 02 02 02 02 02 - 02 02 02 02 02 02 02 02 02 02
tone 240- 259: 02 02 02 02 02 02 02 02 02 02 - 02 02 02 02 02 02
Содержание AAM1212-51
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Страница 2: ...AAM1212 51 53 Series User s Guide 2...
Страница 24: ...AAM1212 51 53 Series User s Guide 24 Table of Contents...
Страница 36: ...AAM1212 51 53 Series User s Guide 36 List of Tables...
Страница 54: ...AAM1212 51 53 Series User s Guide 54 Chapter 3 Front Panel...
Страница 61: ...AAM1212 51 53 Series User s Guide Chapter 4 Introducing the Web Configurator 61 Figure 21 Logout...
Страница 62: ...AAM1212 51 53 Series User s Guide 62 Chapter 4 Introducing the Web Configurator...
Страница 68: ...AAM1212 51 53 Series User s Guide 68 Chapter 5 Initial Configuration...
Страница 84: ...AAM1212 51 53 Series User s Guide 84 Chapter 7 System Information...
Страница 90: ...AAM1212 51 53 Series User s Guide 90 Chapter 9 User Account...
Страница 96: ...AAM1212 51 53 Series User s Guide 96 Chapter 10 Switch Setup...
Страница 98: ...AAM1212 51 53 Series User s Guide 98 Chapter 11 IP Setup...
Страница 100: ...AAM1212 51 53 Series User s Guide 100 Chapter 12 ENET Port Setup...
Страница 132: ...AAM1212 51 53 Series User s Guide 132 Chapter 14 xDSL Profiles Setup...
Страница 140: ...AAM1212 51 53 Series User s Guide 140 Chapter 15 xDSL Line Data...
Страница 148: ...AAM1212 51 53 Series User s Guide 148 Chapter 16 VLAN...
Страница 166: ...AAM1212 51 53 Series User s Guide 166 Chapter 19 Multicast VLAN...
Страница 190: ...AAM1212 51 53 Series User s Guide 190 Chapter 26 DHCP Snoop...
Страница 198: ...AAM1212 51 53 Series User s Guide 198 Chapter 27 2684 Routed Mode...
Страница 204: ...AAM1212 51 53 Series User s Guide 204 Chapter 28 PPPoA to PPPoE...
Страница 220: ...AAM1212 51 53 Series User s Guide 220 Chapter 33 Syslog...
Страница 228: ...AAM1212 51 53 Series User s Guide 228 Chapter 34 Access Control...
Страница 238: ...AAM1212 51 53 Series User s Guide 238 Chapter 36 Alarm...
Страница 246: ...AAM1212 51 53 Series User s Guide 246 Chapter 38 Diagnostic...
Страница 270: ...AAM1212 51 53 Series User s Guide 270 Chapter 41 Commands...
Страница 278: ...AAM1212 51 53 Series User s Guide 278 Chapter 42 Command Examples...
Страница 286: ...AAM1212 51 53 Series User s Guide 286 Chapter 43 Alarm Commands...
Страница 328: ...AAM1212 51 53 Series User s Guide 328 Chapter 48 Packet Filter Commands...
Страница 334: ...AAM1212 51 53 Series User s Guide 334 Chapter 49 IP Commands...
Страница 344: ...AAM1212 51 53 Series User s Guide 344 Chapter 51 SNMP...
Страница 380: ...AAM1212 51 53 Series User s Guide 380 Chapter 52 ADSL Commands...
Страница 406: ...AAM1212 51 53 Series User s Guide 406 Chapter 53 Virtual Channel Management...
Страница 412: ...AAM1212 51 53 Series User s Guide 412 Chapter 54 ACL Commands...
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