Short Haul
Modem
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ASMi-52

Specifications

• Type

2/4-wire unconditioned dedicated line (twisted pair)

• Line Coding

TC-PAM

• Range

See Table 1 and Table 2

• Impedance

13 5

• Standards

ITU-T 991.2
ETSI 101 524

• Protection

As per ITU K.21 and UL1950

• Connectors

RJ-45 and 5-clip terminal block

• Type

X.21, 15-pin, D-type, female
V.35, 34-pin, female
G.703/G.704 E1, RJ-45 or BNC
IR-ETH/Q (Ethernet bridge with
VLAN support), RJ-45
IR-IP (IP router), RJ-45

• Data Rate

Depends on the DTE interface type and number of line wires:

nx 64 kbps (n = 1, 2, ..., 32)
nx 128 kbps (n = 1, 2, ..., 16)

• E1 Coding

HDB3

• E1 Line Impedance

12 0 , balanced

7 5 , unbalanced

• Interface

V.24/RS-232, DTE/DCE

• Format

7 or 8 bits; odd, even or no parity

• Baud Rate

9.6, 19.2, 38.4, 57.6, 115.2 kbps

• Connector

9-pin, D-type, female

• Timing

Derived from the following

sources:

Internal oscillator
External, from the attached DTE
Receive, derived from the received signal

• Diagnostics

Loopbacks:

Local analog loopback in compliance with ITU V.54
Remote digital loopback in compliance with ITU V.54

Performance monitoring:

G.SHDSL statistics collection
E1 with CRC-4: per ITU G.706
E1 without CRC-4: BPV

• Indicators

PWR (green) ΠPower
DATA (yellow) ΠTransmit data (V.35 interface only)
SYNC A/B (green/red) ΠSync status of DSL line
E1 SYNC (red) ΠLoss of E1 sync (E1 interface only)
AIS (yellow) ΠiyAll 1s stringl) is received (E1 interface only)
ALM (red) ΠAn alarm enters the buffer
TST (red) ΠTest is in progress

• Physical

Height: 47.3 mm / 1.8 in
Width: 214 mm / 8.4 in
Depth: 125 mm / 4.9 in
Weight 0.5 kg / 1.1 lb

• Power

AC: 100 to 240 VAC ( 10%), 50 to 60 Hz, 17 VA max
DC: -48 VDC (-36 to -72 VDC), 7W max

• Power Consumption

5W (4-wire) or 4W (2-wire)

• Environment

Temperature: 0-50 C/32-122 F
Humidity: Up to 90%, non-condensing