Operation Manual

22 NetWare MultiProtocol Router for ISDN 3.1 Installation and ISDN Configuration Guide
ISDN D channel signaling protocols are used for negotiations and
connection set-up between the ISDN device, i.e. the router/ISDN-
Controller and the public ISDN switches of the respective PTTs. The
following D channel signaling protocols are supported:
- DSS1 (Euro-ISDN)
- 1TR6 (Germany, support for "Vorbestellte
Dauerwählverbindungen" supported at BRI and PRI)
- DS01, DS02 (leased line types offered by the German PTT; DS01
offers one B channel and the D channel; DS02 offers two B chan-
nels and the D channel)
- D64S (leased line type offered by the German PTT, offering one B
channel and no D channel)
- CT1 (Belgium, Norway)
- VN3/VN4 (France)
- NI-1 (USA)
- 5ESS (AT&T custom ISDN, USA)
- TS 013, AUSTEL (Australia, support for "Semi Permanent Con-
nections" at BRI)
Depending on the PTTs offerings, different options are available. The
following options are supported:
♦♦ Multipoint Access and MSNs/EAZs and SPIDs - BRI
Multipoint access is most commonly available at your Basic Rate
Access. This access type includes a set of predefined numbers
assigned to your access by your PTT and allows to set up a bus
structure to connect and address different devices. These predefined
numbers are, depending on the D channel protocol, called Multiple
Subscriber Numbers (MSN) or "Endgeräteauswahlziffern" (EAZ).
MSNs are supported by the NetWare MultiProtocol Router for ISDN
within DSS1, VN3/VN4, NI-1, 5ESS and TS 013 (AUSTEL). EAZs are
only used within 1TR6 and are also supported. Configuring an MSN
or EAZ for a device tells this device to listen exclusively to this MSN
or EAZ when a call comes in on the bus and to only react to incom-
ing calls addressed to this number. Within the NetWare MultiProto-
col Router for ISDN, you can and sometimes must configure an
MSN or EAZ for each of the two ISDN interfaces (see Chapter 14,
"Configuration Interdependencies").
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