• Dedicated managed SHDSL
• 2-wire and 4-wire service over any copper infrastructure
• TC-PAM line coding for extended operation range
of up to 10 km
(6.2 miles) on 24 AWG
• Data rates between 64 kbps and 4608 kbps
• Four levels of QoS based on four VLAN priority queues (Ethernet
Dedicated managed SHDSL modem for 2-wire and 4-wire service over
any copper infrastructure
ASMi-52L is an SHDSL modem that
operates in full-duplex mode over 2-wire
and 4-wire lines.
Multiple data rates in the range of 64 to
4608 kbps are supported. Data rates
depend on the line interface, DTE
interface types, and operating clock
ASMi-52L employs standard SHDSL TCPAM
technology to extend the
transmission range (see Table 1) and
enable carriers to reach more customers
at lower costs.
User interfaces include X.21 and V.35
DTEs, and E1 interface. For LAN-to-LAN
connectivity using SHDSL technology, the
modem features a built-in 10/100BaseT
bridge with one Ethernet port and VLAN
support or a 10/100BaseT switch with
four Ethernet ports and VLAN ID
transparent and VLAN priority support.
ASMi-52L is available as standalone plastic
enclosure or metal rail-mount enclosure
with extended temperature support
service only). Full management and monitoring of the remote unit is
achieved by using an Embedded Operation Channel (EOC). The
management channel uses SHDSL overhead bits in compliance with ITU-T
G.991.2 requirements, operating without
interfering with the data transmission. Management of Ethernet units
is performed via the data port.
ASMi-52L units can operate opposite a centrally located LRS-24 rack
with ASMi-52CQ cards installed (see Figure 1). VLAN priority enables
up to four QoS priority levels (for Ethernet units only).
Up to eight SHDSL repeaters can be installed in line to increase the
operation range of the modem. ASMi-52L provides
basic management of the repeaters. Supervision and configuration
activities are performed using an ASCII terminal, IP hosts using the
Telnet protocol, or RADview-EMS (Java-based modular client-server
scalable element management system) providing secure
configuration and fault management capabilities. The terminal port
supports a dial-up modem connection for remote management of
ASMi-52L over telephone lines. A modem with a 4-wire line interface
can be configured to operate over 2-wire lines.
Comprehensive diagnostic capabilities
• Real-time alarms to alert the user on fault conditions (reported
by the management station)
• V.54 local analog and remote digital loopbacks
• SHDSL statistics collection for 15-minute and 24-hour intervals.
Automatic configuration allows the current configuration to be
uploaded and downloaded from a configuration file.
Ordering Information: See Below (illustration)
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