H3C Technologies H3C MSR 50 - Manual (Page 157)

3-53
MIM-1G.SHDSL
Introduction
1-port Single-Pair High-Speed Digital Subscriber Line module (MIM-1G.SHDSL) adopts the Trellis
Coded Pulse Amplitude Modulation (TCPAM) approach and can provide the symmetric speed as high
as 2.3 Mbps. Its transmission speed can automatically adapt to cable length and conditions. Compared
with ADSL, G.SHDSL allows longer transmission distance and as such, can serve a wider range of
applications. It can substitute for E1/T1 lines to provide high-speed data service access. However, as
TCPAM uses the band starting from 0 Hz for data transmission, G.SHDSL cannot share the same line
with POTS or ISDN just like what ADSL has done.
The MIM-1G.SHDSL module supports:
z
Manual G.SHDSL line activation/deactivation and easy-to-use fault isolation tools;
z
G.992.1 interface standard and auto-sensing.
Interface attributes
The interface attributes of MIM-1G.SHDSL are given in the following table:
Table 3-46 Interface attributes of MIM-1G.SHDSL module
Attribute MIM-1G.SHDSL module
Connector RJ-11
Number of connectors 1
Interface standard G.991.2
Interface rate
In single-pair mode, supports the sending/receiving independent
symmetric speed in the range 192 kbps to 2304 kbps, with the step
length being 8 kbps.
Cable Telephone cable
Supported service G.SHDSL access over telephone lines
Interface LEDs
MIM-1G.SHDSL panel is shown in the following figure:
Figure 3-61 MIM-1G.SHDSL panel
The following table describes the LEDs on the MIM-1G.SHDSL panel:
Table 3-47 Description of the LEDs on the MIM-1G.SHDSL panel
LED Description
LINK
z OFF means no link is present;
z
ON means a link is present.
ACT
z
OFF means no data is being transmitted or received;
z
Blinking means data is being received or/and transmitted.