User guide

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NT6X70 — The continuity tone detector card detects tones that are used in
call processing to verify the continuity of the voice/data path between
LTCs. It monitors and records the frequency and level of the tones. The
continuity tone detector CP retains this data for use by the XPM processor
CP in the LTC.
NT6X72 — The remote formatter card is located in the RCC shelf. All
RCC functional changes in adapting network side communication ports
from DS30 to DS1 are made by replacing the NT6X41 speech bus format-
ter card.
NT6X73 — The link control card (LCC), located within the
RLCM/OPM/SRU Host Interface Equipment (HIE), provides an interface
between eight ports from an RLCM LCA shelf and the DS1 links to the
host. Also provides an interface between the ESA processor, if provi-
sioned, and the LCM. The NT6X73BA card is the international version for
the HIE and acts as the messaging interface and provides data rate conver-
sion between the SCU, RMU, and the PCM30. It also acts as the clock
source for the SRU.
NT6X74 — The control circuit card, located within the RMM/RIM
shelves, functions as the link between line control arrays (LCA) of the
LCM and test trunks, service circuits, and RMM alarm circuits. It pro-
cesses DMS-X messages, trunk messages, and PCM data.
NT6X75 — The optional ESA clock and tone circuit card, located within
the RLCM/OPM Host Interface Equipment (HIE) and RIM shelves, gener-
ates the clock signal for the LGC/DTC processor and the tones (dial,
busy/reorder, receiver off hook, audible ringback, and electronic business
set ring-down) needed for ESA operation.
NT6X78 — The CLASS modem resource card, found in SCMs, provides
various residential (RES) enhanced features and can be provisioned in slot
16 of the SMU shelf. The CMR card is required if the calling number
delivery (CND) feature is being provisioned.
NT6X80
— The pad/ring card, found in SCMs, generates ringing fre-
quency instructions using PCM. The frequencies are switched by the TS
card onto the DS1 channels which are associated with the subscriber loops
that are to be rung.
NT6X81 — The A/B interface card, found in SCMs, inserts and extracts A
and B bits from the PCM stream. These per-channel signaling bits are used
for ringing, hook status detection, and, in some instances, ANI and coin
functions.
Note: For further information on the following NT6X85 card DIP switch
settings, see the “DIP Switch Settings for the 6X50 & 6X85 DS1 Cards”
within this QRG.
NT6X85 (see previous note) — The SLC-96 DS1 interface card contains
two DS1 ports. One to ten cards are provisionable for each SMS, SMS-R,
or SMU module. The DS1 interface card operates in one of two modes: (1)
DDL mode and (2) non-DDL mode. Each port provides a two-way voice,
data, and signaling interface. The card provides looparound paths for each
DS1 port to allow isolation of faults. It also provides transmission of local
alarms and the detection of remote alarms as well as detection of error con-
ditions such as loss of synchronization, bipolar error, and slip.
NT6X86 — The A/B interface card, located in the SCMs, inserts and
extracts A and B bits from the PCM stream. These per-channel signaling
bits are used for ringing, hook status detection, and, in some instances, ANI
and coin functions. NT6X86AB card is required for XPM PLUS upgrades.
NT6X91 — The NT6X91 provides a mobile telephone exchange link
between the CC and the corresponding peripheral unit.
NT6X92 — The UTR is a 32-channel tone receiver, found in the DTC,
LGC, LTC, SMA, SMR, SMU, LTCI/DTCI, MSB7, TMS, and RCC
shelves, detects a variety of tones, including dual-tone multifrequency
(DTMF) and multifrequency (MF). Tone samples are switched onto the
parallel speech bus by the TS and are collected by the UTR at appropriate
time slots. The UTR analyzes the samples and identifies tones. Results are
sent to the XPM processor. NT6X92EA is the Global Tone Receiver.
NT7X07 — The Internet Protocol (IP) Gateway (IPGW) card provides the
bridge between the TDM(time division multiplex) network and the IP Uni-
fied Network. It converts voice data from the IP terminals to TDM voice
data for the PSTN. Up to five of these cards can reside on an IP Ready
LTCI XPM shelf for a total of 10 cards per two-shelf module. Each module
has 480 channels (48 channels per card). See Centrix IP in this QRG.
NT7X80 — The bus shorter card connects the FP bus, the MP bus, and the
SP bus on 3 processor XPMs. The NT7X80AA is inserted in slots 13 and
17 of PDTCs and PLGCs as part of the upgrade to PDTC+ and PLGC+.
NT8X12 — This interface card, used in the NT8X10 Junctored Network,
provides sixteen bi-directional, 2.56 Mb/s port interfaces for the DS-30 for-
mat of NMs or PMs and also provides the serial to parallel and parallel to
serial formatter functions for interfacing with the NT8X13 crosspoint card.
The card provides sixteen ports and in a set of four provides sixty-four
ports per NM. The card also handles the insertion and extraction of test
code (TC) from card NT8X14. The TC is inserted only on the port card in
the speech channel immediately after the outgoing circuit. When the TC is
inserted, the speech bus is disabled for involved port and channel.