
The ERM-Mux / plus is a 4U 19(23)" 14 slot rack type E1 Time Division Multiplexer for Fractional E1 network access which is designed for
non-stop operation.There are 10 slots available for hot-swappable ERM-Mux / plus-I/O cards. Two slots are provided for Mux-E1 cards, which
may be configured as four separate E1links or for redundant 1+1 operation of the E1 lines, safe guarding against expensive network down time.
Two slots are also available for CPU cards, with the second CPU card acting as a hot standby in case of primary card failure. Each Mux-E1 card
may be linked to another ERM-Mux / plus Rack to provide a point-to-point variety of datacom, Ethernet & voice over E1 network services. The
ERM-Mux/plus optionally accommodates up to two separate powerpplies, which may derive power from AC (110/220) or DC (-48V) power
sources. When two power supplies are installed, the modules provide complete power redundancy and are hot swappable even during the E1
cards' transmission. The ERM-Mux/plus provides all interface connections on the front panel. BNC and RJ-45 are used for E1 Line interface
connections, RJ-45 connections are used for all voice (FXO, FXS, E&M), for 10/100 Ethernet Bridge and G.703-64K co-directional /
contra-directional / center. Optional cable adapters are used to convert the DB-62F DCE ports of the I/O cards to 6xRS-232, HP68F DCE port of
I/O card to 4x V.35, RS-232, RS-530, RS-449, RS-422 and X.21 or 5x X.50 channels.
ERM-Mux / Plus
4U, 10 I/O Slot Data, Ethernet,
Voice E1 Managed Multiplexer
Connectors
Console port (RJ45, RS232C)
WAN port RJ45 Jack (2-wire, 4-wire)
Physical Specifications
Dimensions: 350 x 438 x 176mm (W x D x H)
Weight: 8kg (chassis+dual power+8 I/O cards) 450g per card
Power Characteristics
AC : AC 90 ~250VAC
DC : DC -48VDC
Environmental Specifications
Operating 0°C to 60°C
Storage 0°C to 70°C
Relative humidity 0% to 90% non-condensing
Predicted MTBF : 65,000 hrs (25°C)
Certification
CE
Features
Main Alarm/ Sub Alarm/
Relay/ Connector
Auto-resume
AC Power socket
SNMP Port
RS485 Port
Multi-case
G703 Ext. clock RJ45 Port
G703 Ext. clock BNC Port
Case Expanding
Cooling Fan
AC, DC Power Redundancy
Interface Cards
CPU Cards
E1 Trunk Cards
CPU redundancy (1+1)
E1 redundancy (1+1 ) and E1 card redundancy
Power redundancy (1+1) [2AC, 2DC, AC+DC]
DCE hot swappable card types
4ch V.35 (nx64K)
4ch G.703 64K co-directional /contra-directional / center mode
2ch Ethernet bridge
6ch RS232
6ch FXS voice
6ch FXO voice
6ch E&M voice
Drop & Insert function
Console, NMP,SNMP, management
Specifications
5-23
E1 Access Multiplexer
ERM-Mux/plus overview
ERM-Mux/Plus
www.ctcu.com
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