User guide

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NTEX26 — The NTEX26AA link interface unit (LIU) channel-bus inter-
face (CBI) circuit pack is used in the CCS7 LIU (LIU7) within a link
peripheral processor (LPP) equipped for channelized access. The
NTEX26AA is located behind the NT9X76AA signaling terminal (ST) in
an LIU7.
NTEX28 — The NTEX28AA network interface unit (NIU) DS30 link
interface Paddle Board (LPB) is used in the link peripheral processor (LPP)
for channel access. The card is a 4-port DS30 link interface board that pro-
vides DS30 links between the peripheral side (P-side) of the network and
channel bus controllers (CBC) in an application-specific unit (ASU) shelf.
NTEX30 — The NTEX30AA T1 analog paddle board (T1PB) is the
printed circuit pack (PCP) within the frame relay interface unit (FRIU) that
provides the interface between the NTEX31AA frame
relay access processor (FRAP) and the physical T1 transmission medium.
T1PB is also used with NTEX31BA-based FRIUs.
NTEX31 — The frame relay access processor (FRAP) is the main
processor for the frame relay interface unit (FRIU).
NTEX54 — An enhanced data bus interface card (DBIC) required in LCM
drawers that provide Ethernet 1 Meg Modem Service. The DBIC separates
the voice and data traffic. The card multiplexes the voice traffic to standard
DS-30A interfaces to the existing circuit switched voice network. The card
multiplexes the data traffic to one 10BaseT Ethernet connection to the
transport network. NTEX54BAAB, BAAC, and BAAD are for Phase 2B.
NTFX09
— The NTFX09AA network channel bus (C-bus) interface Pad-
dle Board (CIP) is used in the X.25/X.75 link interface unit (XLIU). The
CIP is one of three circuit packs that form the XLIU. The CIP connects to
the backplane C-bus to provide the high-level
data link control (HDLC) frame processor (HFP) with channelized data.
When combined with software, the XLIU hardware implements the
DMS-100 packet handler (DMSPH).
NTFX10
— The NTFX10AA high-level data link control (HDLC) frame
processor (HFP) circuit pack is used in the X.25/X.75 link interface unit
(XLIU). The HFP is one of three circuit packs that together form the
XLIU. When combined with software, the XLIU hardware implements the
DMS-100 packet handler (DMS-PH). By
provisioning the LIU shelf with a network interface unit (NIU) pair, each
XLIU will have logical access to both the message switch
frame bus (F-bus) and the network channel bus (C-bus).
NTFX30 — The IOM controller card (NTFX30), located in slot 3 of the
ISM shelf, contains hardware and firmware to support 16 general purpose
ports. The ports include the RS-232C, V.35, current loop and PERTEC.
The hardware and firmware also support two DS-30 links to the message
switch (MS) and two optional external SCSI devices on the storage media
card. The NTFX30 controls the entire operation of the IOM.
NTFX31 — The IOM Paddle Board (NTFX31) contains the power feed
circuits. The Paddle Board contains a maximum of 16 smart connectors
and circuits. The Paddle Board implements a local loopback for diagnostic
purposes. The Paddle Board is at the rear of the ISM shelf backplane at the
slot 3 position.
NTFX32 — The storage media card (NTFX32AA) occupies slot 4 of the
ISM shelf. This card has slots for plug-in digital audio tape (DAT)
(NTFX32CA) and disk drive unit (DDU) (NTFX32BA) plug-in units.
NTFX42 — The ISM processor card ISM processor circuit card is
designed to be functionally compatible with the existing TM/MTM service
circuit cards. It provides a combined functionality of the NT0X70,
NT3X45, NT2X53, and NT2X59 controller cards.
NTFX43 — The ISM DC converter card provides regulated and protected
power supplies required by the ISM shelf. The converted voltages are +5
V, + 1 2 V, + 2 5 V, a n d - 1 5 V ( d c ) .
NTFX44 — The improved loop test accessory (ILTA) card is provisionable
in the ISM shelf and is designed to be used with some external test units
like the Mod 3703 LTC or Teradyne’s 4-Tel Colt. It connect to up to four
NT2X90 IC/OG test trunks. See the ISM shelf and the NTFX44/NT2X90
assignments within this QRG.
NTGX04 — The NTG04AA Bus Terminal Transition Module Paddle
Board and the NTGX04BA Bus Extender Transition Module Paddle Board
can be found in the rear of the MSM shelves.
NTGX05 — NTGX05AA 68-kbyte memory card is part of the DMS Mail
Service Peripheral Module. It provides the processing environment for the
common system program, for example, directory and message transfer
agent. The 68Kbyte card supports two RS-232C Electronic Industries
Assoc. communication ports.
NTGX06 — The NTG06AA 68K Transition Module Paddle Board can be
found in the rear of the MSM shelves.
NTGX07— The NTG07AA Modem Transition Module Paddle Board can
be found in the rear of the MSM shelves.
NTGX08 — The NTGX08AA T1 Main card terminates 4 spans and is
located on the electronics shelves of the MSM.
NTGX09 — The NTG08AA T1 Transition Module Paddle Board can be
found in the rear of the MSM shelves.