34 Site planning
All network components must support forwarding of IP multicast
packages. The DAP Configurator proposes a default multicast IP address
(239.192.49.49). This is a multicast address in the private multicast IP
address range that can be used 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.
DAP power configuration
DAPs are powered using one of the following methods.
•
Locally using an RJ11 connector. The AC voltage must be 40V (+ or -
10%). Use an AC adaptor that provides at least 10 Watts. See Table 1
"Part numbers" (page 34) for part numbers of available AC adaptors.
Table 1
Part numbers
NTCW28AAE5 N0162030 DAP AC/AC adaptor Eur
NTCW28BAE5 N0162032 DAP AC/AC adaptor UK
NTCW28CAE5 N0162033 DAP AC/AC adaptor ANZ
•
Through Power over Ethernet (PoE) as defined by IEEE802.3af
specifications. The DAPs support both phantom power and power over
spare wires. The following specifications are applicable to PoE power.
— Minimum 36 Volts and maximum 60 Volts of voltage at the DAP
—
Standard RJ45 connector, using the spare wires pins (wires)
—
Maximum cable length of 100 meters
Both phantom power and power over spare wires are provisioned on the
same DAP to provide system redundancy. The power provision providing
the highest voltage is active. If one of the power inputs fail, the other takes
over without service interruption.
Initial critical points on the floor plan to identify
A critical point is a place that can be difficult for the radio signal to reach,
such as a corner of a room, lifts, and stairwells. Initial critical points are
shown in Figure 7 "Critical points" (page 35) as P1, P2, P3, and P4.
Figure 7 "Critical points" (page 35) shows the following.
• stairwell
• second floor plan
Nortel Communication Server 1000
SIP DECT Fundamentals
NN43120-123 01.07
6 January 2009
Copyright © 2008-2009 Nortel Networks
.
To Next Page
Loading...
Need help?
General
