AudioCodes Mediant 2000 User Manual page 590

Parameter
Web: RTP Directional Control
[RTPDirectionControl]
Web/EMS: RFC 2833 TX
Payload Type
[RFC2833TxPayloadType]
Web/EMS: RFC 2833 RX
Payload Type
[RFC2833RxPayloadType]
[EnableDetectRemoteMACC
hange]
Web: RTP Base UDP Port
EMS: Base UDP Port
[BaseUDPport]
User's Manual
N/A. Controlled internally by the device according to the selected
coder.
Defines the Tx RFC 2833 DTMF relay dynamic payload type.
The valid range is 96 to 99, and 106 to 127. The default is 96. The
100, 102 to 105 range is allocated for proprietary usage.
Notes:

Certain vendors (e.g., Cisco) use payload type 101 for RFC
2833.

When RFC 2833 payload type negotiation is used (i.e., the
parameter TxDTMFOption 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.
The valid range is 96 to 99, and 106 to 127. The default is 96. The
100, 102 to 105 range is allocated for proprietary usage.
Notes:

Certain vendors (e.g., Cisco) use payload type 101 for RFC
2833.

When RFC 2833 payload type negotiation is used (i.e., the
parameter TxDTMFOption 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.
Determines whether the device changes the RTP packets
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.
Notes:

For this 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 this
parameter to 0 or 2.
Defines the lower boundary of the UDP port used for RTP, RTCP
(RTP port + 1) and T.38 (RTP port + 2). For example, if the Base
UDP Port is set to 6000, then one channel may use the ports RTP
6000, RTCP 6001, and T.38 6002, while another channel may use
RTP 6010, RTCP 6011, and T.38 6012, and so on.
The range of possible UDP ports is 6,000 to 64,000. The default
base UDP port is 6000.
Once this parameter is configured, the UDP port range (lower to
upper boundary) is calculated as follows:

BaseUDPport to (BaseUDPport + 299*10)
590
Description
Document #: LTRT-68822
Mediant 2000