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ASMi-52 Ver. 2.5 Overview 1-1
Chapter 1
Introduction
1.1 Overview
ASMi-52 is an SHDSL modem that operates in full-duplex over 2/4-wire lines and
offers a cost-effective solution for delivering digital data to customer premises over
existing copper cables. ASMi-52 handles multiple data rates in the range of
64–4608 kbps. The unit is available with a single data port or as a multiplexer with
two data ports. The modem supports X.21, V.35, RS-530, E1 and T1 interfaces. In
addition, ASMi-52 may contain an Ethernet/Fast Ethernet bridge with VLAN
support (via management LAN port), or an IP router (IR-IP).
ASMi-52 uses TC-PAM coding and complies with the ITU-T G.991.2 requirements,
see page 1-7.
Certain multiplexer application combinations are possible. See Table 1-4 for the
multiplexer applications.
Versions
DTE Interface
ASMi-52 supports the following DTE interfaces:
• X.21
• V.35
• RS-530
• E1, as per G.704
• T1
• Ethernet/Fast Ethernet bridge with VLAN support (combined with management
LAN port)
• IR-IP (IP router).
The following combinations of interfaces can be multiplexed:
• V.35 + LAN
• E1 + LAN
• E1 + serial port (V.35, X.21, RS-530)
Line Interface
• ASMi-52 for operation over a 2-wire line
• ASMi-52 for operation over a 4-wire line.