iPECS UCM
Installation Manual Issue 1.1
17
2.2.3.1.1 UCM- LANU (LAN Unit)
The UCM-LANU (LAN Unit) provides LAN connection between Gateway Modules and connection with
external LAN switch. It is installed in UCM-MGC3 and has 11-port 10/100Base-T Ethernet interface to connect
the Gateway Modules installed on the same UCM-MGC3. It also provides duplicated 2-port uplink
10/100/1000Mbps Ethernet interface and duplicated 2-port RS-232C interface. The UCM-LANU provides 8
kHz system clock to all UCM-MDTM2, UCM-MDTMX2 and other UCM-LANU in a synchronization group to
synchronize the reference clock of the digital trunk line. The 8 kHz synchronous system clock is extracted from
the digital trunk line of UCM-MDTM2 and UCM-MDTMX2 assigned as the system reference clock by Call
Ser ve r. The UCM-LANU detects the status of Power, Fan and Gateway Module and reports this information to
the call server. The UCM-LANU also displays the information on UCM-LCDU and the displayed information is
as below.
Ethernet link status, MAC & IP address information
Humidity and temperature in the system
Voltage level of power supply
Fan and Power alarm
In addition, the UCM-LANU controls the FAN speed according to an internal temperature and raises an
audible alarm when the status is abnormal.
Interface specification
Specifications
11 ports 10/100Mbps Ethernet to each Gateway Module
2 ports 10/100/1000Mbps Ethernet for External Links
Internal SIO 11 ports, External SIO 2 ports
Electrical specification
Supply Power Input: +5V, DGND, FGND
Mechanical specification
Option Module dimension (W x L): 145 mm x 307.3 mm
Option Module weight: 550g
Figure 2-13 UCM-LANU
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