Specifications

ENT_MLE_015989 - Ed 02_2014-10-13
Chapter 13: Topology – Network Services
55/64
Alcatel-Lucent Enterprise Communication Solutions
April 2014 Offer
Handover: During a conversation, a mobile user
can move within the company premises without
any interruption or interference.
Roaming: A mobile user can make or receive
calls from any location in the OmniPCX Enterprise
radio coverage area. The DECT handset is always
synchronized with a radio base station and can
switch from one base station to another.
To cover a site, radio base stations, connected to the OmniPCX Enterprise, are mounted to create a
private cellular network.
A radio coverage survey is necessary and must be conducted to define the number of base stations
needed at specific locations. All internal calls are free of charge. External calls bear the same cost as
calls from any wired phone.
The signaling for the base station and the DECT sets is included in the media gateway signaling. For
each media gateway, the signaling bandwidth needed is about 9.6Kbps for 250 users. The protocol
used is UA signaling end to end.
3.3.6.1.2 High level architecture
The Alcatel-Lucent DECT solution is an integral part of the Alcatel-Lucent OmniPCX Enterprise system.
DECT relies on a mix of wired and wireless infrastructure. The Communication Server establishes
end-to-end signaling with the DECT set. This makes it possible to deploy DECT sets at any one of the
remote site by connecting the base stations to the Media gateways.
A Communication Server manages all the sets (wired or wireless) at the sites through signaling links.
Signaling is direct to IP sets, but for TDM and DECT sets signaling, is established via the Media
gateway. Every set configured on the Communication Server is visible in the OmniPCX Enterprise
network, which entails that DECT users can make and receive calls to/from any user in the network.
The media gateway communicates with the DECT sets via the base stations connected to the digital
ports (UA). Up to the base station, the physical characteristics correspond to the OmniPCX Enterprise
digital port physical characteristics (based on 3B+D architecture). Beyond the base station, Alcatel-
Lucent DECT abides by standard DECT wireless technologies. DECT handsets have their signaling link
established with the Communication Server, as long as it is within the base station coverage. Users
can move with their set across the DECT coverage area and can communicate with no interruption.
The seamless handoff between base stations belonging to a media gateway is what makes this
possible. The roaming feature allows users to visit, be recognized, and use all the services available
at their originating site.
Each DECT set configured within the user database of the system has a unique number. The DECT
set has all the characteristics defined for a wired extension and can access to all the available system
services. The DECT set is assigned to the IP Domain and the entities configured of the site.
Therefore, it follows the site routing characteristics while making or receiving calls.