Nortel DMS-100 Series Maintenance Manual page 117

2. The NTMX45AA based ESA package consists of two pieces of
equipment. This package includes an ESA processor that enables duplicate
Nxx in ESA mode and provides firmware downloads. This card has
8 Mbytes of on-card memory. With this package, the ESA memory card is
not needed and slot 14 has a filler plate.
one ESA processor card (NTMX45AA)
one ESA clock and tone card (NT6X75AA)
NT6X45AF – ESA processor card
This card is the same processor card used in the LTC. The LTC processor
card, when used in the RLCM equipment frame, is called the ESA processor.
NT6X47AC – 4 Mbyte memory card
This card is the same memory card used in the LTC. This card contains
4 Mbyte of memory. The system uses 3 Mbyte for call processing when the
RLCM enters ESA. The 6X47AC is required for ESA loads for BCS33 and
higher.
NT6X75AA – ESA clock and tone card
This card provides the following functions:
a frame pulse for clock generation during ESA mode to replace the lost
PCM30 frame pulse from the host
tones to an LCM during ESA
an interface to allow the ESA processor to send and receive messages to
and from the host during normal operations. During ESA mode, this
card communicates with both units of the LCM and the RMM.
NTMX45AA – ESA processor card
This card is an improvement over the NT6X45AF ESA processor. 8 Mbytes
of on-card memory enable duplicate Nxx numbers in ESA mode. This card
also supports in-service firmware downloads. With this ESA processor, the
NT6X47AC ESA memory card is not needed and slot 14 of the HIE shelf
has a filler plate.
NT2X48AB – Digitone receiver card
The RMM requires the Digitone receiver (DTR) card for ESA operation.
The ESA processor places the DTRs in service when in ESA. The ESA
processor turns the DTRs off when the ESA processor exits ESA. The
RMM uses a single card four-channel DTR, NT2X48BB for ESA Digitone
calls. The RMM provides diagnostics for the ESA processor.
DMS-100 Family RLCM Maintenance Manual XPM12 and up
PRLCM overview 2-15