Filter
Top Products
3Com Router 5000 and Router 6000 v2.41
Module Guide
Chapter 3
Multifunctional Interface Modules (Router 5000)
3-50
Modem interface
Phone port
Line port
ADSL card
RJ11 interface
PSTN
Modem interface
Phone port
Line port
ADSL card
RJ11 interface
Router
DSLAM
Splitter
Modem interface
Phone port
Line port
ADSL card
RJ11 interface
PSTN
Modem interface
Phone port
Line port
ADSL card
RJ11 interface
Router
DSLAM
Splitter
Figure 3-54 Connecting the Router 1-Port ADSL Over POTS MIM
3.12 Router 2-Port ADSL Over POTS MIM
3.12.1 Introduction
Router 2-Port ADSL Over POTS MIM, the 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.
3.12.2 Interface Attributes
The following table describes the interface attributes of the Router 2-Port ADSL Over
POTS MIM.
Table 3-30 Interface attributes of the Router 2-Port ADSL Over POTS MIM
Attribute
Router 2-Port ADSL Over
POTS MIM
Connector
RJ-11