Polycom IP 320 Administrator's Manual page 292

Administrator's Guide for the SoundPoint IP / SoundStation IP / VVX Family
Attribute
sec.srtp.sessionParams.
noEncrypRTCP.require
sec.srtp.sessionParams.
noEncrypRTP.offer
sec.srtp.sessionParams.
noEncrypRTP.require
sec.srtp.requireMatchingTag
Note
A - 112
Permitted
Values Default
0 or 1 Null
0 or 1 Null
0 or 1 Null
0 or 1 Null
H.235 <H235/>
At this time, this attribute is used with the Polycom VVX 1500 phone only.
The H.235 Voice Profile implementation is Polycom HDX-compatible.
OpenSSL-based Diffie-Hellman key exchange and AES-128 CBC encryption
algorithms is used to encrypt the RTP media
Interpretation
If set to 1, no encryption of RTCP is required.
A call placed to a phone configured with
noAuth.require must offer the
UNENCRYPTED_SRTCP session parameter in its
SDP.
If
sec.srtp.sessionParams.noEncryptRTCP.requi
re is set to 1,
sec.srtp.sessionParams.noEncryptRTCP.offer
is logically set to 1 no matter what the value in the
configuration file.
If set to 0 or Null, encryption of RTCP is required.
If set to 1, no encryption of RTP is offered. A
session description that includes the
UNENCRYPTED_SRTP session parameter is sent
when initiating a call.
If set to 0, or Null, encryption of RTP is offered.
If set to 1, no encryption of RTP is required.
A call placed to a phone configured with
noAuth.require must offer the
UNENCRYPTED_SRTP session parameter in its
SDP.
If
sec.srtp.sessionParams.noEncryptRTP.requir
e is set to 1,
sec.srtp.sessionParams.noEncryptRTP.offer
is logically set to 1 no matter what the value in the
configuration file.
If set to 0 or Null, encryption of RTP is required.
A flag to determine whether or not to check the tag
value in the crypto attribute in an SDP answer.
If set to 1 or Null, the tag values must match.
If set to 0, the tag value is ignored.