AudioCodes Mediant 2000 User Manual page 500

Parameter
Web/EMS: RFC 2833 RX Payload
Type
[RFC2833RxPayloadType]
[EnableDetectRemoteMACChange]
Web: RTP Base UDP Port
EMS: Base UDP Port
[BaseUDPport]
SIP User's Manual
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] = The device uses the received GARP packets to
change the MAC address of the transmitted RTP packets
(default).

[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)
Notes:

For this parameter to take effect, a device reset is
required.
500
Mediant 2000
Description
Document #: LTRT-68814