Yealink T21PE2 User Manual

Security Features
389
Values
0-the master key lifetime is not set.
1 to 1024-the master key lifetime is 1024.
1025 to 2^48-the master key lifetime is the configured value.
A value greater than 2048-the master key lifetime is 2048.
Default 0
Parameter
account.X.srtp.unencrypted_rtp.enable
[1]
<MAC>.cfg
Description
It enables or disables the phone’s capability to include unencrypted RTP streams in SDP offers when using
SRTP.
Note: It works only if “account.X.srtp_encryption” is set to 1 (Optional) or 2 (Compulsory). After suc-
cessful negotiation, whether the RTP stream is encrypted or not depends on SDP answer.
Permitted
Values
0-Disabled
1-Enabled, the phone offers both encrypted and unencrypted RTP streams (Unencrypted RTP streams
carry UNENCRYPTED_SRTP session parameters) in SDP offers
Default 0
Parameter
account.X.srtp.unencrypted_rtcp.enable
[1]
<MAC>.cfg
Description
It enables or disables the phone’s capability to include unencrypted RTCP streams in SDP offers when
using SRTP.
Note: It works only if “account.X.srtp_encryption” is set to 1 (Optional) or 2 (Compulsory). After suc-
cessful negotiation, whether the RTCP stream is encrypted or not depends on SDP answer.
Permitted
Values
0-Disabled
1-Enabled, the phone offers both encrypted and unencrypted RTCP streams (Unencrypted RTCP streams
carry UNENCRYPTED_SRTCP session parameters) in SDP offers
Default 0
[1]
X is the account ID. For T54S/T48S/T48G/T46S/T46G/T29G, X=1-16; for>T52S/T42G/T42S, X=1-12; for T41P/T41S/T27G,
X=1-6; for T40P/T40G/T23P/T23G, X=1-3; for T21(P) E2, X=1-2; for T19(P) E2/CP920, X=1.
Encrypting and Decrypting Files
Yealink IP phones support downloading encrypted files from the server and encrypting files before/when uploading
them to the server.
You can encrypt the following files:
l Configuration files: MAC-Oriented CFG file (<MAC>.cfg), Common CFG file (y0000000000xx.cfg), MAC-local CFG
file (<MAC>-local.cfg) or other custom CFG files (for example, sip.cfg, account.cfg)
l Contact Files: <MAC>-contact.xml
To encrypt/decrypt files, you may have to configure an AES key.
Note
aES keys must be 16 characters. The supported characters contain: 0 ~ 9, A ~ Z, a ~ z and special characters: # $ % * + , - . : =
? @ [ ] ^ _ { } ~.
Topics

Yealink T21PE2 Specifications

General

Brand	Yealink
Model	T21PE2
Category	IP Phone
Language	English