Remote Carrier Interface Card - Nortel Communication Server 100 Manual

30 Carrier Remote IPE product description
The T1 or E1 carrier interface performs the following functions:
•
connects the system to Remote IPE using one to three T1 or E1 carrier
links.
•
provides a communication channel between the Local Carrier Interface
card MPU and the Remote Carrier Interface card MPU over timeslot 2
of each carrier. It also multiplexes the system monitor, Card-LAN, and
the SDI port information and transmits it over timeslot 2 across the link.
•
transmits signaling information across the carrier link by using timeslots
0 and 1 of each carrier
•
provides a distance-selectable switch that selects the distance from
the Local Carrier Interface card to the first signal regenerator such as
a repeater, a CSU, or an LTU in the carrier link to be from 0 to 200 m
(0 to 655 ft)
•
uses elastic store buffers to store two frames of carrier data stream
to compensate for possible information propagation delays between
different carrier timeslots in the link. This allows for proper timeslot
alignment of all the carriers on the IVD bus.
•
identifies the card and firmware versions, which are stored in the
EEPROM
•
monitors transmission quality of the link. If the transmission is
degraded or fails, the Local Carrier Interface card automatically
transfers to the spare link, if equipped.

Remote Carrier Interface card

The Remote Carrier Interface card is a microprocessor-controlled
peripheral interface between the Local Carrier Interface card and the
Remote IPE line cards. To communicate with the Local Carrier Interface
card, the Remote Carrier Interface card uses one to three T1 or E1 carrier
links. To communicate with the IPE, the Remote Carrier Interface uses 16
full-duplex serial loops, one for each line card in the Carrier Remote IPE
module or Carrier Remote IPE cabinets.
The Remote Carrier Interface card occupies one controller card slot in the
IPE module. However, the adjacent card slot is not the full width and must
remain empty. This narrower card slot is due to the fact that a standard
peripheral controller card occupies two card slots in the IPE module, and
the Remote Carrier Interface card that plugs into the same backplane
connector, occupies only one card slot. The dummy faceplate can be used
in the empty card slot in the Carrier Remote IPE module for aesthetic
reasons, but is not needed in the Carrier Remote IPE cabinet.
Nortel Communication Server 1000
Carrier Remote IPE Fundamentals
NN43021-555 04.01 4 June 2010
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