Glossary B
Centillion 1200N ATM Switch User Manual B-11
NTP 297-8103-903
B-ICI SAAL
B-ICI Signaling ATM Adaptation Layer : A signaling l ayer that pe rmits the tran sfer
of connection control signaling and ensures reliable delivery of the protocol
message. The SAAL is divided into a Service Specific part and a Common part
(AAL5).
BIP
Bit Interleaved Parity: A method used at the PHY layer to monitor the error
performance of the link. A check bit or word is sent in the link overhead covering
the previous block or frame. Bit errors in the payload will be detected and may be
reported as maintenance information.
BIS
Border Intermediate System.
B-ISDN
Broadband ISDN: A high-speed network standard (above 1.544 Mbps) that
evolved Narrowband ISDN with existing and new services with voice, data and
video in the same network.
BISUP
Broadband ISDN User's Part: A SS7 protocol which defines the signaling messages
to control connections and services.
B-LLI
Broadband Low Layer Information: This is a Q.2931 information element that
identifies a layer 2 and a layer 3 protocol used by the application.
BMT
Basic Mode Transmission
BN
Bridge Number: A locally administered bridge ID used in Source Route Bridging
to uniquely identify a route between two LANs.
BN
BECN Cell: A Resource Management (RM) cell type indicator. A Backwards
Explicit Congestion Notification (BECN) RM-c ell may be generated by the
network or the destination. To do so, BN=1 is set, to indic ate th e cell is n ot sour ce-
generated, and DIR=1 to indicate the backward flow. Source generated RM-cells
are initialized with BN=0.