AudioCodes Mediant 800B MSBR User Manual page 320

Parameter
CLI: reset-srtp-upon-re-key
[IpProfile_ResetSRTPStateUponRekey
]
Generate SRTP keys mode
CLI: generate-srtp-keys
[IpProfile_GenerateSRTPKeys]
Jitter Buffer Max Delay
CLI: jitter-buffer-max-delay
[IpProfile_JitterBufMaxDelay]
GW
Web: Coders Group ID
CLI: coders-group-id
[IpProfile_CodersGroupID]
Web: Fax Signaling Method
CLI: fax-sig-method
[IpProfile_IsFaxUsed]
Mediant 800B MSBR
Description
device and a server when a new SRTP key is generated
upon a SIP session expire. This feature ensures that the
roll-over counter (ROC), one of the parameters used in the
SRTP encryption/decryption process of the SRTP packets
is synchronized on both sides for transmit and receive
packets.

[0] Disable = (Default) ROC is not reset on the device
side.

[1] Enable = If the session expires causing a session
refresh through a re-INVITE, the device or server
generates a new key and the device resets the ROC
index (and other SRTP fields) as done by the server,
resulting in a synchronized SRTP.
Notes:

If this feature is disabled and the server resets the
ROC upon a re-key generation, one-way voice may
occur.

The corresponding global parameter is
ResetSRTPStateUponRekey.
Enables the device to generate a new SRTP key upon
receipt of a re-INVITE with this SIP entity.

[0] Only If Required= (Default) The device generates
an SRTP key only if necessary.

[1] Always = The device always generates a new
SRTP key.
Defines the maximum delay and length (in msec) of the
Jitter Buffer.
The valid range is 150 to 2,000. The default is 250.
Defines coders supported by this SIP entity, by assigning
a Coders Group.
The value, Default Coders Group represents the coders
configured in the Coders table (see Configuring Coders on
page 307). All other optional values (e.g., Coders Group
1), represent the coders defined for the specific Coder
Group configured in the Coder Group Settings table (see
Configuring Coder Groups on page 310).
Defines the SIP signaling method for establishing and
transmitting a fax session when the device detects a fax.

[0] No Fax = (Default) No fax negotiation using SIP
signaling. The fax transport method is according to the
FaxTransportMode parameter.

[1] T.38 Relay = Initiates T.38 fax relay.

[2] G.711 Transport = Initiates fax/modem using the
coder G.711 A-law/Mu-law with adaptations (see Note
below).

[3] Fax Fallback = Initiates T.38 fax relay. If the T.38
negotiation fails, the device re-initiates a fax session
using the coder G.711 A-law/ -law with adaptations
(see the Note below).
320
Mediant 800B MSBR
Document #: LTRT-12813