Media5 Mediatrix 4104, Справочное руководство

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Chapter 22 - Telephony Features Emergency Call
302 Mediatrix 4104

To dial a Forced SCN call:
1. Dial “**”.
2. Dial the telephone number as if you were using a standard telephone, with country code and area
code when required.
Examples :
**8298749
**15145701234
A Forced SCN Call allows you to specify that the user you want to reach is located on the SCN
network. This leaves no decision to the server; it must find a proper gateway and place the call on
the SCN. This option can be useful only when a SCN number is shadowed by a network number.
Emergency Call
The Emergency Call service (also called urgent gateway) allows a “911”-style service. It allows a user to dial
a special digit map resulting in a message being sent to a specified urgent gateway, bypassing any other
intermediaries.
If enabled, whenever the user dials the specified digit map, a message is sent to the target address.
You can also set these parameters via the web interface, as described in “Emergency Call Configuration” on
page 118 .

To enable the emergency call service:
1. In the emergencyCallMIB , locate the emergencyCallUrgentGatewayEnable variable (under the
emergencyCallUrgentGatewayCustomization group).
This variable sets the usage state of the urgent gateway. Urgent messages bypass the outbound
proxy and go directly to the urgent gateway.
2. Define the digits that users must dial to start the urgent gateway call feature in the
emergencyCallUrgentGatewayDigitMap variable.
For instance, you could decide to put “*60” as the sequence a user must dial to start the urgent
gateway service. This sequence must follow the syntax for digit maps (see
“Chapter 21 - Digit Maps”
on page 291 ). Dialing this digit map does not have any effect unless the service's status is
“enabled”.
The activating sequence is set for all the lines of the Mediatrix 4104. You cannot have different
sequences for each line.
3. Set the number to reach for an urgent call in the emergencyCallUrgentGatewayTargetAddress
variable.
Accepted formats are:
• telephone numbers (5551111)
• SIP URLs such as ”scheme:user@host”. For instance, “sip:user@foo.com”.
Note that this string is used literally, so cosmetic symbols (such as the dash in “555-xxxx”) should
not be present.
Note:
A forced SCN call is only be possible if an analog gateway such as the Mediatrix 1204 is available
on the IP network.