Physical Description; Local Mini-Carrier Interface Card - Avaya Communication Server 1000M Single Group Manual

Description

Physical description

Local Mini-carrier Interface card

The Local Mini-Carrier Interface card (LMI) resides in any two consecutive IPE card slots
normally used for IPE circuit packs. The LMI consists of a motherboard and a daughterboard.
The motherboard is a standard IPE-sized circuit pack with a double-wide faceplate. The
daughterboard is a small circuit board that picks up the DS-30X bus connections from the
adjacent card slot. The daughterboard mounts to the motherboard through five standoffs. The
first card slot's 25-pair connector is used to plug into the LMI Multi-I/O cable assembly
(NT5D85), that provides connection to the carriers, MMI, SDI, and alarm (see
Multi-I/O cable assembly (NT5D85)
provides connection to all three LMX boards.
Signaling Interface
The Signaling Interface block provides an interface between the signaling channels on the
DS-30X and the processor. Signaling bytes are extracted from both DS-30Xs and sent to the
processor under interrupt control. The processor also sends signaling messages into the
DS-30Xs.
T1
The T1 interface is capable of driving 655 feet without a repeater. A CSU is required for
connection to the Public Switched Telephone Network (PSTN).
Processor
The 68000-based processor controls all on-board functions. The processor controls all LMI
operation and steers the proper carrier timeslots to each DS-30X channel. The microprocessor
has its own EPROM and RAM for program and data storage.
CardLAN
The cardLAN interface is the same as that of the XDLC card, providing self-test and
maintenance information. The cardLAN interface circuitry responds to both card slot
addresses, acting to the switch as two independent circuit packs. The circuit pack responds
36 Mini-Carrier Remote Fundamentals
on page 25). The second card slot's 25-pair connector
Comments? infodev@avaya.com
Figure 5: LMI
March 2013