Isdn Bri Trunk Access - Nortel Meridian 1 Administration And Maintenance

Page 242 of 492

ISDN BRI trunk access

553-3011-311 Standard 7.0
Chapter 6 — ISDN BRI trunk implementation
ISDN BRI trunks may be configured for either local exchange/CO/DID trunk
connectivity, MCDN Tie trunk connectivity, or QSIG trunk connectivity.
ISDN BRI trunk connections are configured on a per DSL basis, that is, DSL
trunk connections may be configured on any given DSL for any SILC or
UILC. The trunks can be accessed using both ISDN BRI terminals and non
ISDN BRI devices (such as digital and analog telephones).
ISDN BRI Local exchange CO/DID connectivity is accomplished via a
MISP card and an S/T interface, using the SILC line card. This connectivity
is supported for Numeris VN3, 1TR6, ETSI NET-3 (EuroISDN), INS
NET-64 (Japan D70), and Asia-Pacific protocols; refer to Figure 38.
ISDN BRI MCDN Tie trunk connectivity is achieved via a MISP card and
either S/T or U interfaces, using the SILC and UILC line cards respectively.
This connectivity may be:
— between two Meridian 1 PBXs through a local exchange acting as a
passive facility; the local exchange must support Numeris VN3, 1TR6,
ETSI NET-3 (EuroISDN), INS NET-64 (Japan D70), or Asia-Pacific
protocols; refer to Figure Figure 39.
— directly between two Meridian 1 PBXs; refer to Figure 40 and Figure 41.
ISDN BRI QSIG connectivity is achieved through an MISP card and either
S/T or U interfaces, using the SILC and UILC line cards respectively. This
connectivity is supported within a Private Telecommunications Network
(PTN) between two Private Telecommunications Network Exchanges
(PTNXs); examples may be a Centrex-to-Centrex connection, or a
Centrex-to- PBX connection; refer to Figure 42 in the section "ISDN BRI
QSIG connectivity" on page 255.
Note: The BRSC cannot be utilized for ISDN BRI trunk access.
These configurations are explained in greater detail in the sections that
follow.
May 1999