User's Manual

Installation and configuration 359
The PC-Port Untag All option appears dimmed if Disable Data
802.1Q check box is selected.
40 Use the Right navigation key to scroll and highlight Cached IP
check box. Press the Enter key to switch this item on and off.
41 Use the Right navigation key to scroll to Enable PSK SRTP.
Press the Enter key to switch this item on and off.
The SRTP media encryption feature provides encrypted media.
A preshared secret is embedded in the Nortel IP Phone to
generate and to exchange encryption parameters without any
Call Server involvement.
For further information about the SRTP media encryption feature,
see “Media security” (page 457) and Security Management
Fundamentals (NN43001-604).
42 Use the Right navigation key to scroll and highlight Ignore
GARP check box. Press the Enter key to switch this item on and
off.
The GARP feature protects the IP Phone from a Gratuitous ARP
Spoof attack from the network.
For more information about GARP, see “Gratuitous Address
Resolution Protocol Protection” (page 363).
43 If an External Application Server (XAS) is available in the
network, use the Right navigation key to scroll and highlight the
XAS IP list. Use the dialpad to enter the XAS IP address.
The XAS delivers business applications to the IP Phone. For
more information about XAS, see Nortel Application Gateway
1000 documentation.
44 If the XAS supports graphical displays, use the Right navigation
key to scroll and highlight Graphical XAS check box. Press the
Enter key to switch this item on and off.
45 Use the Right navigation key to scroll and highlight Port list.
Press the Enter key to start the edit mode. Use the dialpad to fill
in the information.
46 Upgrade the IP Phone 1120E firmware.
The IP Phone 1120E supports remote firmware upgrades
through a TFTP process and an automated UFTP process.
Nortel Communication Server 1000
IP Phones Fundamentals
NN43001-368 02.07
5 February 2009
Copyright © 2003-2009 Nortel Networks
.