H3C Technologies H3C MSR 50 - Manual (Page 60)

2-40
SIC-1ADSL
Introduction
A 1-port ADSL over PSTN interface module (SIC-1ADSL) provides an RJ-11 interface that can work as
a WAN interface. It allows a LAN subscriber to connect to the digital subscriber's loop access
multiplexer (DSLAM) at the central office over a regular analog subscriber line or telephone line. Thus,
the subscriber can access the ATM/IP backbone or the Internet to enjoy services such as high-speed
data communication and video on demand (VoD).
ADSL transmits data in the high frequency band above 26 kHz. Therefore, it can provide services
without interfering with the voice service being provided in the low frequency band (0 to 4 kHz) on the
same line. It provides downlink rates in the range 32 kbps to 8 Mbps and uplink rates in the range 32
kbps to 1 Mbps.
The SIC-1ADSL delivers these features:
z
Manual ADSL line activation and deactivation, providing a convenient fault location means.
z
Interface standards of G. DMT, G. Lite, and T1.413, auto-sensing.
z
Trellis coding (except for G. Lite) on ADSL interfaces, enhancing the stability of ADSL connection.
Interface attributes
Table 2-30 Interface attributes of the SIC-1ADSL
Attribute SIC-1ADSL
Connector RJ-11
Number of connectors 1
Interface rate
z
In ADSL full rate mode (ITU-T 992.1 G.DMT/ANSI T1.413):
8 Mbps (downlink rate)
1024 kbps (uplink rate)
z
In ADSL Lite mode (ITU-T 992.2 G.Lite):
64 kbps to 1 Mbps (downlink rate)
64 kbps to 512 kbps (uplink rate)
z
In ADSL2+ full rate mode (ITU-T 992.5):
24 Mbps (downlink rate)
1024 kbps (uplink rate)
Interface standard
z
ITU-T 992.1 G.DMT
z ITU-T 992.2 G.Lite
z
ANSI T1.413 Issue 2
z
ITU-T 992.3
z
ITU-T 992.5
Cable Telephone cable
Supported service ADSL over the regular telephone line
Interface LEDs
The following figure illustrates the SIC-1ADSL panel.