3Com 3C13886 Installation Guide - Page 150

Router 1/2-port Adsl Fic

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3Com Router Module Guide Chapter 4 Caution: The ROUTER 1-PORT OC-3 ATM SML FIC provides a long-haul fiber interface. It requires transmission distance at least longer than 25 km (15.5 in.); otherwise, the interface cannot receive signals. The ROUTER 1-PORT OC-3 ATM MM FIC must be connected using the multi-mode optical fiber whereas the ROUTER 1-PORT OC-3 ATM SM FIC/ ROUTER 1-PORT OC-3 ATM SML FIC must be connected using the single-mode optical fiber. 4.11 ROUTER 1/2-PORT ADSL FIC 4.11.1 Introduction ROUTER 1/2-PORT ADSL FIC, the 1-/2-port ADSL over PSTN interface card, 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 ADSL interface cards provide these functions: z Manual ADSL line activation and deactivation, supporting SAR loopback for convenient fault isolation. z Interface standards of G. DMT, G. Lite, and T1.413, auto-sensing. z Trellis coding (except for G. Lite) on ADSL interfaces, enhancing stability of ADSL connections. 4.11.2 Interface Attributes The following table describes the interface attributes of the ROUTER 1/2-PORT ADSL FIC. Table 4-25 Interface attributes of the ROUTER 1/2-PORT ADSL FIC Attribute ROUTER 1-PORT ADSL FIC ROUTER 2-PORT ADSL FIC Connector RJ-11 4-41

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3Com Router Module Guide
Chapter 4
4-41
Caution:
The ROUTER 1-PORT OC-3 ATM SML FIC provides a long-haul fiber interface. It
requires transmission distance at least longer than 25 km (15.5 in.); otherwise, the
interface cannot receive signals.
The ROUTER 1-PORT OC-3 ATM MM FIC must be connected using the multi-mode
optical fiber whereas the ROUTER 1-PORT OC-3 ATM SM FIC/ ROUTER 1-PORT
OC-3 ATM SML FIC must be connected using the single-mode optical fiber.
4.11
ROUTER 1/2-PORT ADSL FIC
4.11.1
Introduction
ROUTER 1/2-PORT ADSL FIC, the 1-/2-port ADSL over PSTN interface card, 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 ADSL interface cards provide these functions:
Manual ADSL line activation and deactivation, supporting SAR loopback for
convenient fault isolation.
Interface standards of G. DMT, G. Lite, and T1.413, auto-sensing.
Trellis coding (except for G. Lite) on ADSL interfaces, enhancing stability of ADSL
connections.
4.11.2
Interface Attributes
The following table describes the interface attributes of the ROUTER 1/2-PORT ADSL
FIC.
Table 4-25
Interface attributes of the ROUTER 1/2-PORT ADSL FIC
Attribute
ROUTER 1-PORT ADSL FIC
ROUTER 2-PORT ADSL FIC
Connector
RJ-11