User's Manual

396 Features
ID when it is provisioned automatically. The payload type ID values are 96,
115, and 120. The default value is 96. SRTP PSK must be enabled before
you can change the payload type ID.
SRTP PSK uses RTP packets with Payload Type ID of 96 to exchange the
encryption parameters. With UNIStim firmware Release 3.2, three Payload
Type IDs can be selected to exchange the encryption parameters: 96, 115,
and 120.
The automatic provisioning feature enables you to configure SRTP
automatically through a provisioning file. For more information, see
“Provisioning the IP Phones” (page 491).
To configure PSK SRTP on IP Phones, see the following procedures:
•
IP Phone 2001, IP Phone 2002, IP Phone 2004, IP Phone 1110, IP
Phone 1210, IP Phone 1220, and IP Phone 1230—Procedure 102
“Enabling SRTP media encryption on text-based IP Phones” (page
396)
• IP Phone 2007—Procedure 103 “Enabling SRTP media encryption on
an IP Phone 2007” (page 397)
• IP Phone 1120E, IP Phone 1140E, and IP Phone 1150E—Procedure
104 “Enabling SRTP media encryption on graphics-based phones”
(page 397)
•
IP Phone 1165E — Procedure 105 “Enabling SRTP media encryption
on an IP Phone 1165E” (page 398)
For more information about configuring an IP Phone, see the applicable
section in this document.
Procedure 102
Enabling SRTP media encryption on text-based IP Phones
Step Action
1 Disconnect then reconnect the power on the IP Phone to reset it.
2 When the Nortel logo appears, press each of the four soft keys
at the bottom of the display in sequence from left to right, one at
a time.
3 If no other configuration changes are required, press OK
repeatedly until PSK SRTP (0-No, 1-Yes) option appears.
4 Press 1 to enable PSK SRTP.
5 Press OK.
Nortel Communication Server 1000
IP Phones Fundamentals
NN43001-368 05.06 30 April 2010
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