Channel Parameters; General Parameters - AudioCodes Mediant 3000 User Manual

6.16

Channel Parameters

This subsection describes the device's channel parameters.

6.16.1 General Parameters

The general channel parameters are described in the table below.
Parameter
Web: Max Number of Active
Calls
EMS: Maximum Concurrent
Calls
[MaxActiveCalls]
Web/EMS: Max Call Duration
(min)
[MaxCallDuration]
[EnableUDPPortTranslation]
EMS: Enable Media UDP
Checksum
[EnableMediaUDPChecksum]
EMS: Is CISCO Sce Mode
[IsCiscoSCEMode]
SIP User's Manual
Table 6-54: General Channel Parameters
Defines the maximum number of simultaneous active calls
supported by the device. If the maximum number of calls is
reached, new calls are not established.
The default value is the maximum available channels (no restriction
on the maximum number of calls). The valid range is 1 to 2,016.
Defines the maximum call duration (in minutes). If this time expires,
both sides of the call are released (IP and Tel).
The valid range is 0 to 35,791. The default is 0 (i.e., no limitation).
[0] = Disable UDP port translation (default).
[1] = Enable UDP port translation.
When enabled, the device compares the source UDP port of the
first incoming packet, to the remote UDP port stated in the opening
of the channel. If the two UDP ports don't match, the NAT
mechanism is activated. Consequently, the remote UDP port of the
outgoing stream is replaced by the source UDP port of the first
incoming packet.
Notes:
For this parameter to take effect, a device reset is required.
The NAT mechanism and the IP address translation must be
enabled for this parameter to take effect (i.e., DisableNAT = 0,
EnableIpAddrTranslation = 1).
Determines whether the device inserts a non-zero UDP layer
checksum on outgoing packets for UDP streams carrying media
content (audio and video).
[0] = Disable - the outgoing UDP packets carry the value of
0x00 (i.e., no checksum) in the UDP checksum field of the UDP
header (default).
[1] = Enable - UDP checksum is added in the outgoing UDP
header.
Note: For this parameter to take effect, a device reset is required.
Determines whether a Cisco gateway exists at the remote side.
[0] = No Cisco gateway exists at the remote side (default).
[1] = A Cisco gateway exists at the remote side.
When there is a Cisco gateway at the remote side, the device must
set the value of the 'annexb' parameter of the fmtp attribute in the
SDP to 'no'. This logic is used if EnableSilenceCompression = 2
(enable without adaptation). In this case, Silence Suppression is
used on the channel, but not declared in the SDP.
414
Description
Document #: LTRT-89707
Mediant 3000