17
Table 30 LED description
LINK/ACT (P0-P3)
• On means a carrier signal is received.
• Off means no carrier signals is received.
• Fast flashing means data is being received or/and transmitted.
• Slow flashing means the module is negotiating rates.
Interface cables and connection methods
For more information about G.SHDSL interface cables and connection methods, see "G.SHDSL
interface."
SIC-1ADSL
Introduction
The 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. Therefore, the subscriber can access the ATM/IP backbone or the Internet to use 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 provides the following features:
• Manual ADSL line activation and deactivation, which provides a convenient method for fault
location.
• Interface standards of G. DMT, G. Lite, and T1.413, auto-sensing.
• Trellis coding (except for G. Lite) on ADSL interfaces, enhancing the stability of ADSL
connection.
Interface specifications
Table 31 Interface specifications
Connector RJ-11
Number of connectors 1
Interface rate
• In ADSL full rate mode (ITU-T 992.1 G.DMT/ANSI T1.413):
8 Mbps (downlink rate)
1024 kbps (uplink rate)
• In ADSL Lite mode (ITU-T 992.2 G.Lite):
64 kbps to 1 Mbps (downlink rate)
64 kbps to 512 kbps (uplink rate)
• In ADSL2+ full rate mode (ITU-T 992.5):
24 Mbps (downlink rate)
1024 kbps (uplink rate)
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