AudioCodes Mediant 800 MSBG User Manual page 778

Parameter
Web: MLPP Default Namespace
EMS: Default Name Space
[MLPPDefaultNamespace]
Web/EMS: Default Call Priority
[SIPDefaultCallPriority]
SIP User's Manual
[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
to that channel. The preemption is done only on a channel
pertaining to the same Hunt Group for which the E911 call
was initially destined and if the channel select mode
(configured by the ChannelSelectMode parameter) is set to
other than "By Dest Number" (0). The preemption is done
only if the incoming IP-to-Tel call is identified as an
emergency call. The device identifies emergency calls by
one of the following:
The destination number of the IP call matches one of
the numbers defined by the EmergencyNumbers
parameter. (For E911, you must define this parameter
with the value "911".)
The incoming SIP INVITE message contains the
"emergency" value in the Priority header.
Notes:
Applicable to FXS/FXO, CAS, and ISDN interfaces.
For FXO interfaces, the preemption is done only on
existing IP-to-Tel calls. In other words, if all the current
FXO channels are busy with calls that were initiated by
the FXO (i.e., Tel-to-IP calls), new incoming emergency
IP-to-Tel calls are dropped.
For a detailed description, see ''Pre-empting Existing
Call for E911 IP-to-Tel Call'' on page 427.
Determines the namespace used for MLPP calls received from
the ISDN side and destined for the Application server. The
namespace value is not present in the Precedence IE of the
PRI Setup message. Therefore, the value is used in the
Resource-Priority header of the outgoing SIP INVITE request.
[1] DSN = DSN (default)
[2] DOD = DOD
[3] DRSN = DRSN
[5] UC = UC
Defines the default call priority for MLPP calls.
[0] 0 = ROUTINE (default)
[2] 2 = PRIORITY
[4] 4 = IMMEDIATE
[6] 6 = FLASH
[8] 8 = FLASH-OVERRIDE
[9] 9 = FLASH-OVERRIDE-OVERRIDE
If the incoming SIP INVITE request doesn't contain a valid
priority value in the SIP Resource-Priority header, the default
value is used in the Precedence IE (after translation to the
relevant ISDN Precedence value) of the outgoing PRI Setup
message.
If the incoming PRI Setup message doesn't contain a valid
Precedence Level value, the default value is used in the
Resource-Priority header of the outgoing SIP INVITE request.
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Mediant 800 MSBG
Description
Document #: LTRT-12804