
Chapter 1 Overview 31
Digital Mobility System Installation and Configuration Guide
Table 2 Host system - DMC configurations
See “Digital Mobility system diagram” on page 29 for an illustration of the Primary - Secondary
configuration.
Digital Mobility Base station (RFP)
The base stations are positioned in the area to send and receive calls between the host system and
the handset. The base station contains internal antennas and handles four speech channels
simultaneously. A base station is able to synchronize with other base stations. When the base
station is synchronized with other base stations, a person speaking in a handset can move between
base stations without any interference.
Note: Whether the base station is connected to the Primary or Secondary DMC is of no
importance to the synchronization as a base station is synchronized automatically when
performing cable delay measurement. Refer to “Connecting DMC to host system (TCM loop)” on
page 69 for more information on cable delay measurement.
Transmission length is up to 1.5 km (1 mile) on a twisted standard pair category 4 cable, between
the base station and the DMC. From this connection the base station is supplied with power from
the DMC (max. supply 1.5 W). The radius coverage of the base station is 600 meters (2,000 feet)
with a Digital Mobility handset/DECT handset in free sight.
Coverage area decreases depending on choice of building materials and obstructive elements. To
ensure proper coverage in the areas required, it is necessary to conduct a site survey and
deployment by certified technicians. For more information about deployment, refer to the 2G4
Deployment and Demonstration Tool User Guide or the DECT Deployment and Demonstration
Tool User Guide accompanying the Deployment Kit.
DM_InstallationGuide.book Page 31 Monday, September 18, 2006 6:58 AM
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