Polycom MGC Administrator, Руководство администратора

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MGC Administrator’s Guide
3-7
Num-plan Set the type of signaling (Number Plan) that the
MGC unit will use for this service—for example,
ISDN or telex. Enter the number plan according to
information given by the service provider.
For video conferencing purposes, select the
ISDN .
Voice Indicate the frequency of the data being sent.
For practical purposes, the
Voice option is set to
3.1 KHz as it is the more widely used frequency.
However, it is important to make sure that the
system receiving the voice data is set to the same
frequency as that of the data being sent.
Sub Services Some service providers (carriers) may have
several service programs that can be used. They
may also use a backup service provider in case of
malfunction in the ISDN network. You may define
several service programs as sub-services and set
one of them as the default.
If the PRI lines are connected to the MCU via a
network switch, the sub-service may be used to
route the calls to a certain service provider.
The
Sub-Service list displays the list of currently
defined sub services. To select the service program
to be used for the PRI line channels, click the
Add
button. The Sub-Service dialog box opens.
To remove a service program from the list, highlight
it in the list box and click the
Del button. The
selected sub-service is removed from the list.
To set a service program as the default, highlight it
in the list box and click the
Default button. The
selected sub-service becomes the default service
program for the current service provider. The word
“default” appears in parentheses next to the sub-
service’s name.
To edit the parameters of a sub-service, double-
click its name in the sub-services list. The
Sub-
Service dialog box opens.
Table 3-2: PRI Settings Dialog Box Options
Field Description