Nortel CS 1000 Manual page 24

24 Site planning and hardware deployment
SIP DECT typically uses existing IP network infrastructure and facilities
for the network connection. For IP connectivity, you must configure the
network to ensure that all SIP DECT components have the following
characteristics:
•
are equipped with unique IP addresses (some static, some dynamic)
•
can reach all the required services
•
can be reached by all clients and counterparts
Ethernet requirements
The following items describe the Ethernet requirements.
•
The IP network must offer a Quality of Service (QoS) that is sufficient
to support the SIP DECT Voice over IP.
•
The IP network must support transparent IP multicast between all
DAPs and the DAP controller.
•
Connect only one DAP to one IP Switch port.
•
DAP supports full duplex and supports autonegotiation if DAP is
connected to a port on an Ethernet Switch.
•
Ensure that enough unique IP addresses are available to support both
data networking traffic and SIP DECT components. You can configure
private IP addresses for local traffic, and you can configure private IP
addresses on the local network to connect to public IP addresses if you
use Network Address Translation (NAT). However, SIP DECT does
not support NAT.
•
Ensure that IP addresses and routing are consistent with each other
to deliver the required transparency. Also ensure that IP addresses
are consistent with routing for normal unicast traffic as well as for the
required multicast traffic.
•
The maximum cable length between the DAP and IP network
equipment, such as a switch, is 100 meters for a Category 5,
unshielded twisted-pair, half-duplex cable. If the required cable length
between the IP network equipment and the DAP exceeds 100 meters,
use Long Range Ethernet equipment in the connection. Several
manufacturers offer such a solution, which allows cable lengths of
more than one kilometer (km).
ATTENTION
Configure the Ethernet switch ports to which the DAPs are connected to use
autonegotiation. If the switch does not support autonegotiation, you can use
full-duplex; however SIP DECT can operate incorrectly on some switches
when you configure them to use full-duplex.
Nortel Communication Server 1000
SIP DECT Fundamentals
NN43120-123 02.02 30 March 2010
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