MiVoice Office 250 Installation and Administration Guide
386
D-Channel Backup
(Currently
not
supported on
the MiVoice Office 250.)
Because the D-channel supports the other channels in the ISDN network, loss
of the D
-
channel would cause loss of access to the ISDN circuits. D-channels
can be backed up to provide protection in the event of D-channel loss.
D-channel backup is especially important in Non-Facility Associated Signaling
(NFAS), because the D-channel supports all of the B-channels in the
entire
network.
Dedicated Service
Dedicated service reserves a group of B-channels for a specific function, such
as outgoing calls. The system uses trunk group programming to determine how
the channels are used. Therefore, the system would require a separate trunk
group for each function. The installer can create “PBX-provided” dedicated
service on call-by-call circuits through DB Programming (such as incoming only
or accessible only to a group of users) or the service provider can determine
the dedicated service.
Dialed Number Identification
Service (DNIS)
DNIS identifies the number that the caller dialed to reach your location. The
system receives a base number and a specified number of digits that identify
the dialed number. *DNIS*
is a form of DNIS that does not have a specified
number of digits. The system receives a star (*) before the DNIS digits to signal
the beginning of the dialed number. Then there is another star after the digits
to signal the end of the DNIS information.
Flexible Billing
(Currently
not
supported on
the MiVoice Office 250.)
Allows a 900 subscriber to modify a call’s billing rate while speaking with the
caller.
H0 and H11
(Currently
not
supported on
the MiVoice Office 250.)
Switched digital service types that combine contiguous B-channels into a single
bit stream. H0 combines six channels into a 384 kbps bit stream. H11 combines
24 channels into a 1536 kbps bit stream. Applications for these services include
video conferencing and LAN connections.
Integrated Services Digital
Network (ISDN)
ISDN is a network of channels that can provide simultaneous voice, data, and
video communication.
Multi-Rate ISDN
(Currently
not
supported on
the MiVoice Office 250.)
A type of switched digital service that allows the user to dial up, on demand,
any number of combined B-channels.
N X 64 kbps
(Currently
not
supported on
the MiVoice Office 250.)
A switched digital service type that combines the B-channels into a single bit
stream. Applications for this service include video conferencing and LAN
connections.
Network Ring Again
(Currently
not
supported on
the MiVoice Office 250.)
Similar to the system queue feature that allows a caller to queue onto a busy
phone and then be called when the phone is available. However, Network Ring
Again allows queuing between two PBXs that are on the same ISDN network.
Non-Facility Associated
Signaling (NFAS)
(Currently
not
supported on
the MiVoice Office 250.)
When a site uses several PRI circuits, the D-channel on one circuit can support
the B-channels on other circuits, providing one additional B-channel per circuit
(that is, 24 B-channels instead of 23B+D). This arrangement requires
D-channel backup.
On-Demand B-Channel
Selection
This feature allows on-demand allocation of B-channels. With on-demand
B-channel selection, all B-channel trunks can be assigned to one trunk group
and then programmed to be used as needed (ARS, outgoing access, etc.). This
feature takes full advantage of the Mitel system features (trunk groups, ARS,
and call routing) and allows maximum on-demand use of the bandwidth. This
can be combined with Dedicated Service.
Table 71: Networking Terminology (Continued)
Term
Definition
(Sheet 2 of 3)
Содержание MIVOICE OFFICE 250
Страница 1: ...MiVoice Office 250 INSTALLATION AND ADMINISTRATION GUIDE RELEASE 6 3 SP3 ...
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Страница 29: ...Chapter 1 MiVoice Office 250 New Features ...
Страница 41: ...MiVoice Office 250 New Features 13 Other Enhancements MiVoice Office 250 Release 6 2 supports Exchange 2016 ...
Страница 54: ...MiVoice Office 250 Installation and Administration Guide 26 ...
Страница 55: ...Chapter 2 Document Overview ...
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Страница 63: ...Chapter 3 Product Description ...
Страница 86: ...MiVoice Office 250 Installation and Administration Guide 58 ...
Страница 87: ...Chapter 4 Specifications ...
Страница 157: ...Chapter 5 Installation ...
Страница 251: ...Installation 223 ...
Страница 274: ...MiVoice Office 250 Installation and Administration Guide 246 4 Test for quality ...
Страница 396: ...MiVoice Office 250 Installation and Administration Guide 368 ...
Страница 397: ...Chapter 6 Reference ...
Страница 416: ...MiVoice Office 250 Installation and Administration Guide 388 ...
Страница 417: ...Appendix A Private Networking ...
Страница 445: ...Appendix B Network IP Topology ...
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Страница 487: ...Appendix C Open Source License Agreements ...
Страница 506: ...MiVoice Office 250 Installation and Administration Guide 478 ...
Страница 507: ...Appendix D Phones ...