User's Manual

Media security 457
• Identification of the registered IP Phones using string names and
detailed identification of IP Phones that register as emulations of the
base IP Phone 2001, IP Phone 2002, and IP Phone 2004.
•
UNIStim IP Phones are able to register with older versions of firmware
when the UFTP servers are busy, and are periodically offered the
option start the firmware upgrade to the IP Phone.
Enhanced UNIStim Firmware download feature requires a Signaling Server
to be present on the node. Without a Signaling Server, the only firmware
files available for downloading are the three available in CS Release 4.0
for the Phase 0/1/2 IP Phone 2001, IP Phone 2002, and IP Phone 2004.
For further information about Enhanced UNIStim Firmware download
and IP Phone firmware upgrade using Element Manager, see IP Line
Fundamentals (NN43100-500).
Media security
Media security normally shares keys using a secure UNIStim channel. In
situations where CS 1000 Release 5.0 or later is not available, you can
use Pre-Shared keys (PSK).
For CS 1000 Release 5.0 and later, the controlling Call Server provides all
of the keying material and control of the SRTP operation.
For CS 1000 Release 4.5 or earlier, the key is protected by a preshared
secret embedded in the IP Phone to generate and exchange encryption
parameters.
For more information about the Media Security feature, see Security
Management Fundamentals (NN43001-604).
The Media Security feature is supported on the following IP Phones:
•
Phase II IP Phone 2001
•
Phase II IP Phone 2002
• Phase II IP Phone 2004
• IP Phone 2007
• IP Phone 1110
• IP Phone 1120E
• IP Phone 1140E
• IP Phone 1150E
• IP Softphone 2050
Nortel Communication Server 1000
IP Phones Fundamentals
NN43001-368 02.07
5 February 2009
Copyright © 2003-2009 Nortel Networks
.