User guide

75
XMS-based peripheral modules. It is a hybrid of features in the NT6X69 &
NT6X42, with added logic for extra features. The AB version is required if
the RSC-S will also support Spontaneous Call Waiting Display (SCWID)
based on an Analog Display Services Interface (ADSI) service. The AB
version is also required in the LTC or LGC that supports the Star Remote.
The AD version is used in the TOPS Voice over IP Gateway peripheral.
NTMX77AA — The unified processor card replaced the NT6X45,
NT6X46, and the NT6X47 cards with the XPM PLUS Upgrade. The
NTMX77AA is a 68020-based unified processor (UP) CP. The
NTMX77AA is the main processing unit in the central processor and mem-
ory (CPM) shelf. It controls all the service packs, and the trunks and lines,
and communicates with the central control.
NTMX79 — This DS30 extender pack transfers signals between the main
RCC2-EXT shelf and the packs placed in the extension shelf of the RCC2
and GPP CPM extension shelf, and provides +5 V and +12 V or –12 V of
power.
NTMX81 — This dual DS1 packlet pack’s main function is to provide an
interface between two physical DS1 links, and to perform low-level DS1
signaling and speech interface functions. The BA version smaller packlet is
needed for the 16 to 20 C-side DS1 RCC2 upgrade (see the RCC2 shelf
hardware in this QRG).
NTMX87 — The quad frame carrier card provides a DS1 interface
between the SMA2 shelf and the RDT, and the RCC2 and the RSC. It also
supports the GPP CPM for PCM30. The NTMX87 is a normal sized circuit
card that contains four slots (0-3) in its faceplate. Smaller-sized circuit
cards known as dual DS1 NTMX81 or PCM30 NMTX82 packlets are
inserted into these slots to supply the NTMX87AA with its functional iden-
tity. Each NTMX87 holds a maximum of four dual DS1 or PCM30 pack-
lets. Each packlet has two ports for a total of 8 ports per card. The BA
version is needed for the 16 to 20 C-side DS1 RCC2 upgrade.
NTSX05 — A new revolution XPM Processor with 64 MB of DRAM that
replaces the NTMX77 Unified Processor. It is ten times faster. It is
equipped with NTSX06BA 60 MB or NTSX06CA 120MB Packlet Cards,
or NTSX06AA Filler Packs when not equipped. It also features an Ethernet
connection through the backplane for linkage to IP networking equipment.
NT0X67
— This IOC terminator card contains terminating resistors for the
IOCs parallel data bus.
NT0X70 — This processor card is used in the TM, MTM, DRAM, and the
STM. It performs or controls all of the operations accomplished by the
components of the STM. It also store the load and includes circuits that
generate the clock signal, check parity, and perform synchronization. The
NT0X70BA is the international card.
NT1X55 — The disk drive controller card, located on the IOC shelf, con-
tains the logic to provide an interface to one DDU, always on port 0 at the
MAP display. It physically connects 2 control cables using ports 2 and 3.
Ports 0 and 1 are always unequipped. Because a DMS office requires at
least two DDUs, at least two NT1X55s are required. They are housed in
IOE frame 0 and IOE frame 1 respectively, within slot 4. The SCSI DDU
(NT1X55FA), also referred to as an IOC DDU, is a disk drive mounted
directly on the IOC card. It replaces the disk drive controller NT1X55DA
card and associated DDU in the DDU shelf. The NT0X44BB card is the
international version of the DDU.
NT1X62
— The I/O message processor card, located on the IOC shelf,
contains a microprocessor capable of connecting serial message links to the
message switch, and a parallel data bus to the individual device controller
cards. The NT1X62 controls the overall operation of the IOC. The
NT1X62CB functions the same as the existing NT1X62CA; however to
increase robustness, it contains a new DS30 interface using a customized
N03 integrated circuit (IC) device, and a modified 00B reset circuitry.
NT1X67 — The terminal controller card, located in the IOC shelf, contains
the logic to provide an interface for any combination of four VDUs, print-
ers (read-only or keyboard send-receive), or modems. The number of
NT1X67s required depends on the number of console devices equipped in
the DMS switch.
NT1X68 — The magnetic tape controller card contains the logic to provide
an interface for one MTD, always on port 0 at the MAP display. It con-
nects a read cable, a write cable, and a control cable, using ports 1, 2 and 3
respectively. Port 0 is always unequipped.
NT1X75 — The DRAM controller card, located on the DRAM shelf, con-
trols reception and transmission of messages to the DMS-core. It must
always be located in slot 5, and assigned card number 0 and trunk module
circuit number 0. The card can address up to 1 Mbyte of speech memory
(which is equivalent to eight virtual cards: 8 x 128 Kbyte) representing
about 254 s of speech. It can be configured to function as either a 16-, 24-,
or 30-speech channel interface by means of switches. The switches pro-
vide the option of using the specified blocks of channels for uses other than
DRAM.
NT1X80 — The enhanced digital recorded announcement machine card
(EDRAM) provides voice messages to the user. The NT1X80AA provides
4.3 minutes of announcement time and 30 announcement channels. The
NT1X80AA is positioned as a peripheral module (PM) to the DMS (a dig-