Analog Voice Adapter -- FXS, FXO, E&M, or Raw Audio over serial links

• Analog voice over serial
• Voice over Ethernet with the IP6600 or IP9600 or EtherPath or EtherPoll
• Network port may be synchronous or asynchronous
• RS232 serial network
• User serial port plus voice
• Simple, low cost analog phone device
• FXS/FXO, 4-wire E&M or Push-to-Talk interface
• Very high quality low bit rate voice
• ADPCM or PCM for highest quality voice rates
• One to one or one to many configuration
• Industrial temperature -40 to +70 C
• DC power options: 12, 24, 48 VDC
• USB serial port or RS232 port for configuration
• Easy to setup and maintain

DESCRIPTION

The AVA-01 is a one voice port adapter available with FXS, FXO, 4-wire E&M or a push-to-talk interface for a speaker-microphone. The AVA-01 is designed for simplicity and ease of setup. The unit can be setup using a serial terminal interface, via an RS-232 or USB connection.

The AVA-01 provides exceptional compressed voice quality at speeds ranging from 2400 to 9600 bps. The compressed voice is based on the same chip set used for Project 25 (P25) radio interoperability. This is a voice chip set that has a very long market life, which translates to a long market life for the AVA. AVA voice choices also includes 56K PCM. The choice of PCM make the AVA-01 suitable for applications that require tone control, such as links to radio transmitters.

The AVA-01 can be ordered with FXS/ FXO/4-wire E&M/PTT or only push-to-talk (PTT) audio interfaces. PTT is included with the FXS/FXO/E&M units. The interface is specified at the time the unit is ordered. The PTT audio interface is supplied with a microphone and speaker for PTT only orders, and as an add-on item for FXS/FXO/E&M units. The speaker circuit has a .25 watt amplifier.

The AVA-01 can operate over serial or over Ethernet networks. For Ethernet operation, AVA can be used with the DCB EtherPath, EtherPoll, IP6600 router or the IP9600 router. For a voice port over ethernet, AVA can be combined with SR multiplexers or the 4-port EtherPath for multiple point to point voice links.

AVA-01 can be configured for use over an asynchronous or a synchronous network Both versions allow an additional asynchronous RS-232 user port.

Via the asynchronous user port, AVA supports both SCADA polling and compressed voice on multidrop networks of 9600 bps and faster. AVA resolves the contention between the polling and the voice. Voice with polling on multidrop circuits uses the push-to-talk mode. Voice is broadcast from the host to all remote AVAs, and from one remote at a time to the host. This mode allows control room to substation conversations without the need for cell phones or substation voice phone lines. (Point-to-multipoint firmware available 3rd quarter, 2011.)

Applications for the AVA-01

• Utility substations
• Office to home analog extensions
• Audio over data links for remote voice logging
• Two-way radio audio over slow speed data links
• Gas and oil production, pipelines
• Sales personnel at home or traveling
• Phone extensions over wireless links
• "Hoot 'n Hooller" remote public address/ intercom systems using data connections

Questions? Phone us toll free at 800-432-2638

Each AVA-01 includes one USB configuration cable and one serial-network (DB-25) cable.