AudioCodes Mediant 600 - Mediant 600 & Mediant

SIP User's Manual 636 Document #: LTRT-83310
Mediant 600 & Mediant 1000
Parameter Description
[EnableDetectRemoteMACCha
nge]
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.
Web: RTP Base UDP Port
EMS: Base UDP Port
[BaseUDPport]
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 + 255*10)
Notes:
 For this parameter to take effect, a device reset is required.
 The UDP ports are allocated randomly to channels.
 You can define a UDP port range per Media Realm (see
Configuring Media Realms on page 169).
 If RTP Base UDP Port is not a factor of 10, the following
message is generated: 'invalid local RTP port'.
 For more information on the default RTP/RTCP/T.38 port
allocation, refer to the Product Reference Manual.
Web: Remote RTP Base UDP
Port
EMS: Remote Base UDP Port
[RemoteBaseUDPPort]
Defines the lower boundary of UDP ports used for RTP, RTCP
and T.38 by a remote device. If this parameter is set to a non-
zero value, ThroughPacket™ (RTP multiplexing) is enabled. The
device uses this parameter (and BaseUDPPort) to identify and
distribute the payloads from the received multiplexed IP packet to
the relevant channels.
The valid range is the range of possible UDP ports: 6,000 to
64,000.
The default value is 0 (i.e., RTP multiplexing is disabled).
Notes:
 The value of this parameter on the local device must equal the
value of BaseUDPPort on the remote device.
 When VLANs are implemented, RTP multiplexing is not
supported.