3com MSR 20 Manual Do Utilizador
SIC-1ADSL
51
Figure 46 T1 cable
For the pinouts of T1 cables, see Low-End and Mid-Range Series Routers Cable
Manual.
Manual.
c
CAUTION: The corresponding cables are not included in the standard shipment
package of SIC-1VT1. Please order them together with SIC-1VT1. By default, they
are not supplied.
package of SIC-1VT1. Please order them together with SIC-1VT1. By default, they
are not supplied.
Connecting the Interface
Cable
c
CAUTION:
■
You should connect a cable to the port with the correct mark. Misplugging is
prone to impair the card and even damage the router.
prone to impair the card and even damage the router.
■
When using T1 cable outdoors, you are recommended to install a special
lightning arrester on the input end of the cable in order to avoid lightning more
effectively.
lightning arrester on the input end of the cable in order to avoid lightning more
effectively.
If the SIC has been properly installed, follow these steps to connect the cable:
Step 1: Plug one end of T1 cable into the RJ45 connector of SIC-1VT1.
Step 2: Connect the other end of T1 cable to the peer device;
Step 3: Check the status of LINK LED on the SIC-1VT1 panel: OFF means the link is
not connected. In the latter case, check the line.
not connected. In the latter case, check the line.
SIC-1ADSL
Introduction
SIC-1ADSL, the 1-port ADSL over PSTN interface card, 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).
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.
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: