3com MSR 50 Manual De Usuario
104
C
HAPTER
3: M
ULTIFUNCTIONAL
I
NTERFACE
M
ODULES
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For an ISDN U interface line, adapt the interface with an NT1 by inserting one
end of the S/T interface cable into the S/T port on the NT1 and the other end to
the BRI port on the MIM-4BSE.
end of the S/T interface cable into the S/T port on the NT1 and the other end to
the BRI port on the MIM-4BSE.
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For an ISDN S/T interface line, directly connect the cable to the BRI port on the
MIM-4BSE.
MIM-4BSE.
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.
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:
■
Manual G.SHDSL line activation/deactivation and easy-to-use fault isolation
tools;
tools;
■
G.992.1 interface standard and auto-sensing.
Interface Attributes
The interface attributes of MIM-1G.SHDSL are given in the following table:
Interface LEDs
MIM-1G.SHDSL panel is shown in the following figure:
Figure 116 MIM-1G.SHDSL panel
The following table describes the LEDs on the MIM-1G.SHDSL panel:
Table 63 Interface attributes of MIM-1G.SHDSL module
Attribute MIM-1G.SHDSL
module
Connector RJ11
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.
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