Mlpp And Emergency Call Parameters - AudioCodes Mediant 800B User Manual

User's Manual
Parameter
Web: Use Different RTP port
After Hold
CLI: configure voip > sip-definition
advanced-settings > dfrnt-port-
after-hold
[UseDifferentRTPportAfterHold]
56.10.5.9

MLPP and Emergency Call Parameters

The Multilevel Precedence and Preemption (MLPP) and emergency E911 call parameters
are described in the table below.
Table 56-51: MLPP and Emergency E911 Call Parameters
Parameter
Web/EMS: Call Priority Mode
CLI: call-prio-mode
[CallPriorityMode]
Version 6.8
Enables the use of different RTP ports for the two calls involved
in a three-way conference call made by the FXS endpoint in the
initial outgoing INVITE requests.

[0] Disable = (Default) The FXS endpoint makes the first and
second calls on the same RTP port in the initial outgoing
INVITE request. If a three-way conference is then made, the
device sends a re-INVITE to the held call to retrieve it and to
change the RTP port to a different port number.
For example: A first calls B on port 6000 and places B on
hold. A then calls C, also on port 6000. The device sends a re-
INVITE to the held call to retrieve it and changes the port to
6010.

[1] Enable = The FXS endpoint makes the first and second
calls on different RTP ports in the initial outgoing INVITE
request. If a three-way conference is then made, the device
sends a re-INVITE to the held call to retrieve it, without
changing the port of the held call.
For example: A first calls B on port 6000 and places B on
hold. A then calls C on port 6010. The device sends a re-
INVITE to the held call to retrieve it (without changing the port,
i.e., remains 6010).
Notes:

When this feature is enabled and only one RTP port is
available, only one call can be made by the FXS endpoint, as
there is no free RTP port for a second call.

When this feature is enabled and you are using the Call
Forking feature, every forked call is sent with a different RTP
port. As the device can fork a call to up to 10 destinations, the
device requires at least 10 free RTP ports.

This parameter is applicable only to FXS interfaces.
Defines priority call handling, for all calls.

[0] Disable (default).

[1] MLPP = MLPP Priority Call handling is enabled. MLPP
prioritizes call handling whereby the relative importance of
various kinds of communications is strictly defined, allowing
higher precedence communication at the expense of lower
precedence communications. Higher priority calls override
less priority calls when, for example, congestion occurs in a
network.

[2] Emergency = Preemption of IP-to-Tel E911 emergency
calls. If the device receives an E911 call and there are
unavailable channels to receive the call, the device
terminates one of the channel calls and sends the E911 call
869
56. Configuration Parameters Reference
Description
Description
Mediant 800B Gateway and E-SBC