Location Requirements - Nortel CS 1000 Manual

26 Site planning and hardware deployment
Each DAP in a SIP DECT system is assigned a dynamic IP addresses by
the DHCP server. You can configure the DAPs to store the IP address
in flash memory, so the DHCP server is required only during the initial
configuration of the system.
Multicast addresses
SIP DECT uses Multicast addresses for the following functions:
•
Communication between the SIP DECT network components to locate
or address a handset.
If a handset must be reached, the request must simultaneously go
to all DAPs. For example, if you use the page function during an
incoming call, a single multicast message is sent to all DAPs to find the
DAP for your handset quickly and efficiently.
•
Seamless handover from one DAP to the other
If inter-cell handover is necessary, the media path must be redirected
from the existing DAP to another DAP. The handset always initiates
a handover. The handset sends request to another DAP (not the
DAP with the current connection). This DAP issues a multicast on
the network to determine on which DAP the voice connection exists.
The DAP, with the existing voice connection, responds and then the
connection can be redirected from the DAP with the existing voice
connection to the new DAP.
•
Synchronization between DAPs
You must configure multicast before synchronization can occur
between DAPs in the SIP DECT system.
All network components must support forwarding of IP multicast packages.
The IP DECT Configurator proposes a default multicast IP address
(239.192.49.49). This is a multicast address in the private multicast IP
address range for use in private IP networks. If you are not sure you can
access this address, contact the local IT manager.
ATTENTION
You must disable IGMP Snooping and Spanning Tree Protocol on switch ports
where SIP DECT equipment is connected.

Location requirements

Comply with the following requirements for DAP location:
•
Ensure that the location complies with local electrical codes.
•
Install DAPs indoors where no condensation occurs and the
temperature remains within the range of 0 C to 40 C.
•
Install DAPs in a vertical position. The radiation pattern differs between
the horizontal and vertical positions.
Nortel Communication Server 1000
SIP DECT Fundamentals
NN43120-123 02.02 30 March 2010
Copyright © 2008-2010 Nortel Networks. All Rights Reserved.