Gateway Training Workshop Module Two. Advanced Gateway Operations Audio Control Units (ACU). Patrick Kempker Gateway Instructor OEC/ICTAP firstname.lastname@example.org (619) 553-5172. Glossary.
Advanced Gateway Operations
Audio Control Units (ACU)
COR/COS Carrier Operated Relay/ Carrier Operated Squelch - A receiver signal that gives a positive indication a carrier or signal is being received and the receiver is unsquelched.CPM-2/4/6 Control Processor Module - This ACU module controls all aspects of system operation.
DTMF Dual Tone Multi Frequency - The standard touch-tone telephone dialing method sends DTMF characters over the Public Switch Telephone Network (PSTN) line.
DSP Digital Signal Processing (or Processor).
DSP-1/2/2IP The Digital Signal Processor Module, the main radio interface of the ACU-1000 system. DSP algorithms provide Voice Operated Transmit (VOX), Voice Modulation Recognition (VMR), Audio Delay, Noise Reduction, and Tone Keying functions.
Extension Each interface module in the ACU-1000 system is given an extension number. A user enters this extension number to make a communications link through the selected module.
HSP-2/4/2IP The ACU-1000 Handset/Speaker/Prompt Module provides a local operator interface and the system voice prompt circuitry.
INMARSAT International Marine/Maritime Satellite
PSTN-1/1IP Public Service Telephone Network module to interface to the Public Switch Telephone Network
PTT Push to Talk
RX Receive or Receiver
SIP Session Initiation Protocol
SCM-1/2 SIP Channel Module
Squelch A means of detecting audio and causing some action when it is present, such as keying a transmitter or unmuting an audio path.
TX Transmit or Transmitter.
VMR Voice Modulation Recognition. A type of squelch, which is activated only by spoken words and not by tones, noise, or other audio information.
VOX Voice Operated Xmit (Transmit). A circuit or algorithm, which causes a transmitter to key or some other action when voice is present. This squelch type is activated by any audio signal, and is not restricted to voice only.
ACU-1000Requirements & CapabilitiesACU Family – Raytheon JPS
Note: Proper operation of the ACU Controller with a CPM-2 module requires that the CPM-2 module has firmware revision 1.16 or higher.
Pull Down Menu
Shows which ACU slots contain modules
Shows which modules belong to which nets
Pull down menu
Note: You require both IP address and port number for the ACU you want to control
NOTE: This is to temporarily patch active members of existing nets together, temporarily removing them from their original nets
Note: The M disappears from the module’s ICON
OEC/ICTAPOffice of Emergency Communications / Interoperable Communications Technical Assistance Program