Shelf compatibility, Advanced programmable architecture, Advanced communication protocol – Verilink SCM (880-503300-001) Product Manual User Manual
Page 14: System hardware, Scm front module, System hardware -4, Scm front module -4

SCM Overview
1-4
Verilink SCM
Shelf
Compatibility
The SCM is compatible with the AS3000 plug-in modular shelf
system, the MLS 3000 and the QLS 3500. The SCM manages only
AS3000 applications. It can not replace an NCM, NCC, or SCC
module as a node controller for AS2000 products.
Advanced
Programmable
Architecture
The SCM supports the downloading of firmware upgrades to the
application modules. The SCM can broadcast new firmware
revisions to multiple application modules in a shelf
simultaneously.
Advanced
Communication
Protocol
The SCM communicates with the AS3000 application modules using
Verilink’s proprietary Advanced Communication Protocol (ACP). It
can also use the standard TABS protocol to communicate with the
IMUX module.
System Hardware
The SCM assembly consists of a front module and a rear connector
module (NIM 3000), occupying a single shelf/slot position. The NIM
is installed first from the rear of the shelf. The SCM front module is
then installed from the front into the backplane. The NIM is always
installed first and removed last. The SCM front module is always
installed last and removed first.
For more information on Access System 3000 hardware, see the
manual AS3000: The Basics.
SCM Front
Module
The SCM front panel provides LED indicators and management
ports. It is equipped with dual ejector levers to aid installation and
removal of the module.
illustrates the module front
panel.
Figure 1-2 SCM Front Panel
SCM
3000
LOCAL
SYS
MANAGEMENT
PRI
AL
M
ACT
RX
CO
L
EXT
✳ ✳
✳ ✳ ✳
Craft interface port (6-pin RJ-11)
Primary Management port for direct connection to a PC running
TX
✳
Node Manager via RJ-45.