Avaya Communication Manager Administrator's Manual page 1580

Feature Reference
ISDN service
Screens used to administer ISDN
See Access Endpoint
See Trunk Group
— Supplementary Service Protocol (supports public network connection)
— Calling Number (supports CPN)
— Incoming Call Handling Treatment Table (supports digit manipulation, CPN or BN
requests, and night service destinations)
— CBC Trunk Group Usage Allocation screen (supports Call-by-Call Service Selection
Usage Allocation Plans)
— CBC Trunk Group Allocation Plan Assignment Schedule (supports Call-by-Call Service
Selection Usage Allocation Plans)
— Wideband Support Options (supports Wideband Switching)
See ISDN Numbering — Private
See ISDN Numbering — Public/ Unknown
See the DEFINTY services documentation for information about the following screens: ISDN TSC
Gateway Channel Assignments, Network Facilities (supports usage allocation used in Call-by-Call
Service Selection), and Signaling Group (used to define a group of B-channels for which a given
D-channel or D-channel pair carries signaling information).
Transmission rate and protocols
In ISDN-PRI, the transmission standard for layer 1 (the physical layer) is either DS1 T1 or E1. The DS1
T1 (used in North America and Japan) is a digital-transmission standard that carries traffic at the rate of
1.544 Mbps, and the E1 (used in Europe) carries traffic at a rate of 2.048 Mbps. The "D" (data) channel
multiplexes signaling messages for the "B" (bearer) channels carrying voice or data. In a T1, when a
D-channel is present, it occupies Channel 24. In an E1, when a D-channel is present, it occupies channel
16.
Avaya Communication Manager offers several administrable protocols, each of which provides a
different set of ISDN services. See
protocols are discussed in detail later in this section. The following combination of services, including
but not limited to Basic Call, Basic Supplementary Services, Supplementary Services with Rerouting,
Display, and QSIG Networking are supported on the ISDN-PRI interface. Available services outside the
United States vary from country to country.
With ISDN, Communication Manager interfaces with a wide range of other products including servers,
network switches, and host computers. These products include earlier releases of servers running
Communication Manager, public network switches (for example, AT&T 4ESS, Lucent 5ESS, and
Northern Telecom DMS250), and other products adhering to the ISDN signaling protocol.
As an example of how ISDN is used in private- and public-network configurations , see the following
figures. For example, ISDN can be used to connect a switch to a public-switched network, to other
switches, and to computers:
1580
to administer
Access Endpoints
for detailed information on the fields used to administer:
to administer private numbering plans.
to administer ISDN call identification displays.
DS1 trunk service
Administrator's Guide for Avaya Communication Manager
and
Wideband Access Endpoints
on page 1514 for more information. These
.
November 2003