Introduction to NetWare MultiProtocol Router for ISDN 3.1 23
ISDN B Channel Protocols and Options
SPIDs are Service Profile Identifiers which are used at NI-1 and
AT&T custom ISDN switches in the USA to identify what sort of
services and features the switch provides to the ISDN device. When
a new subscriber is added, the service representative will allocate a
SPID just as they allocate a directory number. The subscriber needs
to input the SPIDs into their terminal device before they will be able
to connect to the central office switch (this is referred to as initializ-
ing the device).
♦♦ Point-to-Point Access - PRI, BRI
Point-to-Point access is common with Primary Rate Accesses. But if
you have more than one Basic Rate access, you may apply for this
option (see "Hunt Groups" below). The NetWare MultiProtocol
Router for ISDN supports Point-to Point accesses for PRI and with
all BRI D channel protocols except for D64S, DS01, DS02 and GSM.
♦♦ DDI (Direct Dial In), an option for Point-to-Point access - PRI,
BRI
At Primary Rate Interfaces and at Basic Rate Interfaces, you can
apply for direct dial-in numbers from your PTT. Direct dial-in
numbers can be compared with MSNs or EAZs. At PRI accesses, this
is the only possibility to direct calls to a specific interface and can be
compared to MSNs and EAZs at BRI accesses.
♦♦ Hunt Groups, an option for Point-to-Point access - BRI
If you applied for Hunt Group Numbers, you receive a single
number for different physical Basic Rate Accesses. The NetWare
MultiProtocol Router for ISDN supports Hunt Group Numbers at
Point-to Point accesses with all D channel protocols except for D64S,
DS01, DS02 and GSM.
ISDN B channel protocols are used for negotiations and connection
set-up between the ISDN devices, i.e. the routers/ISDN-Controllers
at each site, and to transmit network data. The following protocols
are supported on the ISDN B channel:
- AVM Proprietary
AVM´s market-proven proprietary ISDN protocol has been in
practical use for more than four years. It is based on X.75SLP,
which is standardized in ISDN. Since it offers more powerful
Introduc.pm6 27.05.97, 21:0323
