AudioCodes Mediant 4000 SBC User Manual page 886

Parameter
Packing Factor
[RTPPackingFactor]
RFC 2833 TX Payload Type
configure voip > gateway dtmf-
supp-service dtmf-and-dialing >
telephony-events-payload-type-tx
[RFC2833TxPayloadType]
RFC 2833 RX Payload Type
telephony-events-payload-type-rx
[RFC2833RxPayloadType]
[EnableDetectRemoteMACChange] Determines whether the device changes the RTP packets
RTP Base UDP Port
configure voip > media
rtp-rtcp > base-udp-port
[BaseUDPport]
configure voip > media rtp-rtcp >
udp-port-spacing
[UdpPortSpacing]
User's Manual
RTPRedundancyDepth parameter is set to 1.
N/A. Controlled internally by the device according to the
selected coder.
Defines the Tx RFC 2833 DTMF relay dynamic payload type for
outbound calls.
The valid range is 96 to 127. The default is 96.
Note: When RFC 2833 payload type negotiation is used (i.e.,
the parameter FirstTxDTMFOption is set to 4), this payload type
is used for the received DTMF packets. If negotiation isn't used,
this payload type is used for receive and for transmit.
Defines the Rx RFC 2833 DTMF relay dynamic payload type for
inbound calls.
The valid range is 96 to 127. The default is 96.
Note: When RFC 2833 payload type negotiation is used (i.e.,
the parameter FirstTxDTMFOption is set to 4), this payload type
is used for the received DTMF packets. If negotiation isn't used,
this payload type is used for receive and for transmit.
according to the MAC address of received RTP packets and
according to Gratuitous Address Resolution Protocol (GARP)
messages.

[0] = Nothing is changed.

[1] = If the device receives RTP packets with a different
source MAC address (than the MAC address of the
transmitted RTP packets), then it sends RTP packets to this
MAC address and removes this IP entry from the device's
ARP cache table.

[2] = (Default) The device uses the received GARP packets
to change the MAC address of the transmitted RTP packets.

[3] = Options 1 and 2 are used.
Note:

For the parameter to take effect, a device reset is required.

If the device is located in a network subnet which is
connected to other gateways using a router that uses Virtual
Router Redundancy Protocol (VRRP) for redundancy, then
set the parameter to 0 or 2.
Global parameter that defines the lower boundary of the UDP
port used for RTP, RTCP (RTP port + 1) and T.38 (RTP port +
2). For more information on configuring the UDP port range, see
''Configuring RTP Base UDP Port'' on page 195.
The range of possible UDP ports is 6,000 to 65,535. The default
base UDP port is 6000.
Note: For the parameter to take effect, a device reset is
required.
Defines the port spacing ("jumps") of local UDP ports allocated
by the device to media channels (legs) within the configured
port range.
886
Mediant 4000 SBC
Description
Document #: LTRT-40203