Verilink M1-3 (880-503136-001) Product Manual - Manual (Page 14)

M1-3 Overview
1-4 Verilink M1-3 User Manual
Far-End Alarm
and Control
The M1-3 module supports Far End Alarm and Control (FEAC)
signals in C-bit parity applications. The third C-bit in the DS3 M-
subframe 1 provides the FEAC signal. Bit-oriented message
protocol (16-bit length) is used on the FEAC datastream.
Firmware
Upgrades
The M1-3 communicates with other AS3000 modules using
Verilink’s Advanced Programmable Architecture (APA). APA
supports M1-3 flash firmware upgrades through FTP downloads.
The flash firmware can also be field-replaced with upgraded chips.
Technical Description
The M1-3 application module is specifically designed for the
AS3000 platform. It can operate in conjunction with other Verilink
AS3000
modules to support a variety of applications.
Figure 1-2 shows the versatility of the M1-3 when combined with
other Verilink modules in the AS3000 system.
Figure 1-2 M1-3 Versatility