AudioCodes Mediant 500 MSBR, Руководство пользователя

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Version 7.2 1125 Mediant 500 MSBR
User's Manual 74. Configuration Parameters Reference
definition settings > e911-
callback-timeout
[E911CallbackTimeout]
call established with the PSAP is terminated.
The valid range is 1 to 60 (minutes). The default is 30.
Note: The parameter is applicable only to digital interfaces.
Emergency Special
Release Cause
configure voip > sip-
definition settings > emrg-
spcl-rel-cse
[EmergencySpecialRelea
seCause]
Enables the device to send a SIP 503 "Service Unavailable" response if
an emergency call cannot be established (i.e., rejected). This can occur,
for example, due to the PSTN (for example, the destination is busy or
not found) or ELIN Gateway (for example, lack of resources or an
internal error).

[0] Disable (default)

[1] Enable
Note: The parameter is applicable only to digital interfaces.
[Enable911PSAP] Global parameter enabling the support for the E911 DID protocol,
according to the Bellcore GR-350-CORE standard.
You can also configure the feature per specific calls, using Tel Profiles.
For a detailed description of the parameter and for configuring the
feature in the Tel Profiles table, see Configuring Tel Profiles on page
440.
Note: If the feature is configured for a specific Tel Profile, the settings of
the global parameter is ignored for calls associated with the Tel Profile.
Emergency Number
configure voip >
sip-definition
settings > emerg-
nbs
[EmergencyNumbers]
Defines a list of “emergency” numbers.
For FXS: When one of these numbers is dialed, the outgoing INVITE
message includes the SIP Priority and Resource-Priority headers. If the
user places the phone on-hook, the call is not disconnected. Instead, a
Hold Re-INVITE request is sent to the remote party. Only if the remote
party disconnects the call (i.e., a BYE is received) or a timer expires (set
by the EmergencyRegretTimeout parameter) is the call terminated.
For FXO, ISDN and CAS: These emergency numbers are used for the
preemption of E911 IP-to-Tel calls when there are unavailable or busy
channels. In this scenario, the device terminates one of the busy
channels and sends the emergency call to this channel. This feature is
enabled by setting the CallPriorityMode parameter to 2 (“Emergency”).
For a description of this feature, see Pre-empting Existing Call for E911
IP-to-Tel Call on page 582.
The list can include up to four different numbers, where each number
can be up to four digits long. For example:
EmergencyNumbers = ‘100’,’911’,’112’
Emergency Calls Regret
Timeout
configure voip > sip-
definition settings >
emerg-calls-regrt-t-out
[EmergencyRegretTimeou
t]
Defines the time (in minutes) that the device waits before tearing-down
an emergency call (defined by the parameter EmergencyNumbers).
Until this time expires, an emergency call can only be disconnected by
the remote party, typically, by a Public Safety Answering Point (PSAP).
The valid range is 1 to 30. The default is 10.
Note: The parameter is applicable only to FXS interfaces.
Multilevel Precedence and Preemption (MLPP) Parameters
MLPP Default
Namespace
mlpp-dflt-namespace
[MLPPDefaultNamespace
]
Determines the namespace used for MLPP calls received from the
ISDN side without a Precedence IE and destined for an Application
server. This value is used in the Resource-Priority header of the
outgoing SIP INVITE request.

[1] DSN (default)

[2] DOD