Coastcom D/I Mux III System User Manual page 102

Backplane
The AMCU backplane interface provides the physical connections for the RS-485 half-
duplex provisioning bus and the control terminal asynchronous serial channels. Power for
the AMCU is also delivered through the backplane.
While the AMCU connects to the backplane via the standard 56-pin card edge connector,
care must be taken to ensure that the MCU is inserted only into the slot marked "CCU or
AMCU." If the AMCU is plugged into the wrong slot, or if a line card is inadvertently plugged
into the "CCU or AMCU" slot, damage is likely to occur.
Provisioning Bus
The provisioning bus serial interface is used to provision and control all the cards in the
shelf.
COM Port
The COM port is an RS-232 asynchronous interface capable of standard data rate speeds
of between 1200 bps and 19200 bps. The port is used by the system operator to
configure and control, or poll, status and alarms from any of the cards.
Ethernet 10Base-T Port
The high speed Ethernet 10Base-T port allows an SNMP manager, or Telnet connection
(locally or via a router), to communicate with the D/I Mux III. (See also Chapter 4.
Configuration and Operation, for more information.)
SLIP/PPP Port
The Serial Line Internet Protocol/Point-to-Point Protocol (SLIP/PPP) asynchronous
connection provides the option of selecting either Ethernet or SLIP network messaging.
As described in Chapter 1. System Overview and Modes of Operation, SLIP replaces the
Ethernet where LANs are absent.
Chapter 3. Installation
Caution!
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