ASM-MN-214
Hub for Short Range Modems

FEATURES• High density 19" modemrack• Any combination of up to14 modem cards• Fiber optic and copper wire
modems in a single
modem rack

• Hot swapping of cards andpower supplies• Optional power feedingfrom different sources(AC or DC)• Separate power supplies
for full redundancy• 4U highASM-MN-214
Hub for Short Range Modems
DESCRIPTION• The ASM-MN-214 is a 19",

4U high, rack-mount, hub forShort Range Modems. The hub
accommodates up to 14 cards,and supports more than
20 different types of cards.
Any combination of modem
cards can be installed. Cards
can be removed or inserted
during operation without
interference to operation of othercards.

APPLICATION• Operating over 2-wire, 4-wire or

fiber optic, baseband modems
support data rates from 300 bps
to 2.048 Mbps.
ASM-MN-214 provides a costeffective and reliable
concentration point for multiple
baseband links supporting last
mile or campus applications.

• ASM-MN-214 can be poweredfrom either AC or DC powersources, or from both. Eachpower supply supports a full rackof cards, regardless of the type.
The hub accommodates two
separate power supplies thatback up each other in case offailure. Each power supply canbe replaced during operation
without affecting the operation ofother modems (hot swapping).

• The ASM-MN-214 rear panel

consists of fourteen 5-screw,
snap-type terminal blocks andfourteen 25-pin, D-typeconnectors (one terminal blockand one DB-25 connector percard).

• Modems with X.21 or V.35

interface require an externalmechanical adapter. CIA/X.21
can be ordered for converting
twoadjacent DB-25 connectors totwo X.21 15-pin connectors,
CIA/V.35 for converting one DB25 connector to a V.35 34-pinconnector.

ASM-MN-214
Hub for Short Range Modems

Table 1. Modem Cards for ASM-MN-214
Type of Module
Synchronous Short Range Modems

Sync/Async Short Range Modems

Fractional CSU/DSU

Rate and Interface Converter

Name of Module
ASM-20/R
ASM-24/R
ASMi-24/R
ASM-40/R
ASM-45-1/R
ASMi-50/R
FOM-E1/T1/R
FOM-40/R
MTM-15/R
MTM-20/R
ASM-10/8/R
ASM-31/R
LDV-2/R
FCD-1L/R
FCD-2L/R
FCD-2L/R/LTU
SPD-703-1/R

Main Features
up to 256 kbps
144 kbps, based on PR-4
144 kbps, with remote management
2048 kbps
768 kbps
64-1152 kbps, based on LA-DSL
E1/T1 fiber optic
2048 kbps, fiber optic
19.2 kbps, medium range
64 kbps, medium range
19.2 kbps
128 kbps, all rate 2-wire
19.2 kbps, 2-wire, data-over-voice
T1, CSU/DSU
E1, DSUE1, with LTU
64 kbps, codirectional

Note: See specific data sheets for details on each card.

ASM-MN-214
Hub for Short Range Modems
SPECIFICATIONS• Number of Slots
14 slots for cards• Power

115 or 230 VAC (±10%), 100W
47 − 63 Hz
48 VDC, 150W, 42 to 64 VDC
24 VDC, 150W, 18 to 32 VDC• Connectors

Line: 14 5-screw, snap-type
terminal blocks
DTE: 14 25-pin, D-type female
connectors• PhysicalHeight:Width:
Depth:

18.0 cm/ 7.0 in (4U)
48.2 cm/ 19.0 in
26.7 cm/ 10.4 in• Environment

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

ORDERING
ASM-MN-214/*/#/&
19" Hub for Short Range Modems
ASM-214-PS/*
Power supply for ASM-MN-214*Specify main power supply:
115 for 115 VAC supply
230 for 230 VAC supply
48 for 48 VDC supply
24 for 24 VDC supply

CIA/+Mechanical adapter convertingDB-25 connectors into standardconnectors+ Specify CIA connector type:
X21 for X.21 D-type, 15-pin
connector for two adjacentmodem cards
V35 for V.35 34-pin connector
for one modem card
ASM-MN-114-BP
Blank panel for ASM-MN-214# Specify redundant power supply:
115 for 115 VAC supply
230 for 230 VAC supply
48 for -48 VDC supply
24 for 24 VDC supply& Specify line connector:
BNC for BNC and RJ-45 line
connectors(Default is terminal block.)609-100-11/98

 1998 RAD Data Communications Ltd.

Specifications are subject to change without prior notice.