ioNET COMMUNICATIONS GATEWAY OVERVIEW

ioNET is an advanced multiplexing / demultiplexing and network distribution system for high performance data acquisition applications such as satellite telemetry and command, flight test, remote sensing, and signals intelligence (SIGINT). ioNET
reliably delivers serial data, time, voice, and video over IP or ATM-based networks. Data from each channel is encapsulated into variable length packets and multiplexed into a network socket connection. Remote ioNET systems receive the data stream from the network and demultiplex it, perfectly reproducing the original data and time signals. The ioNET multiplexing algorithm provides low overhead, low throughput delay, and excellent time correlation between channels. ioNET provides the flexibility to route any input source to any destination on the network. An input source can also be routed to multiple destinations or to multiple output channels at the same destination.

HIGH-AVAILABILITY ARCHITECTURE

Based on the CompactPCI (cPCI) architecture, ioNET provides a high-performance backplane in a rugged form-factor. ioNET offers high availability with built-in redundancy for active system components such as system CPU boards, power supplies, and fans. ioNET also supports hot-swap for all active system components. Two ioNET base system configurations are available: the ION-1600 4U base system with single CPU and 5 I/O module slots and the ION-3200-RSS 12U base system with redundant CPU and 10 I/O module slots.

CPU MODULE

ioNET systems are equipped with either a single CPU Module or with dual, redundant CPU Modules in an active/standby configuration. The CPU Module performs all system configuration, data acquisition, and data routing functions. It contains single or dual 1 GHz Pentium III processors, 512 MB of RAM, a 10/100Mbps monitor and control Ethernet Port, and Dual Gigabit Ethernet data ports. Onboard storage consists of a 2.5" low-profile, board-mounted EIDE hard drive or

NETWORK INTERFACES

The CPU Module's dual Gigabit Ethernet ports are the primary interfaces for network data transfer, supporting auto negotiation, IEEE 802.3x-compliant flow control, and load balancing. The ioNET may also be equipped with an ATM network
interface module. Reliable data transfer is performed using the TCP/IP protocol with support for advanced features such as Window Scaling and Selective Acknowledge. ioNET also supports Quality of Service using RSVP when installed in a QoS-aware WAN. An optional SCPS gateway can be added for high-error-rate, high-delay links. The SCPS gateway transparently transforms ioNET TCP/IP traffic into Space Communications Protocol Standards (SCPS) Transport Protocol (TP) for reliable transmission over links with roundtrip delays as high as 700 msec and bit error rates of up to 10e-5.

LOCAL AND REMOTE SYSTEM MANAGEMENT

ioNET can be controlled using a Graphical User Interface that resides on the unit or on a remote system connected via TCP/IP. The ioNET system also provides a Simple Network Management Protocol (SNMP) interface for integration with a
Network Operations Center. ioNET incorporates an intelligent chassis management module that monitors system status and generates event logs and/or SNMP traps when a fault is detected.

CPU Modules

• 1 GHz Intel processor w/ 512-Mbyte RAM
• Dual 10/100/1000 Mbps and single 10/100 Mbps Ethernet interfaces
• Onboard EIDE hard drive or CompactFlash
• Access to I/O functions provided by ION-4807 CPU Transition Module

Network Interfaces

• Dual 10/100/1000 Mbps Ethernet interface
• IEEE 802.3x-compliant flow control
• Automatic link speed, duplex, and flow control negotiation
• Load balancing across Ethernet interfaces
• Front panel RJ-45 connectors
• Optional ATM interface (OC-3 or OC-12)
• TCP/IP with support for Window Scaling and Selective Acknowledge (SACK)
• SCPS-TP for high delay, high BER links (SCPS gateway option)
• Programmable Quality of Service (QoS)
• Support for IP Security (IPSec) and Virtual Private Networks (VPN)

System Management Interface

• 10/100 Mbps Ethernet interface via front panel RJ-45 connector
• Graphical User Interface for local or remote control (via TCP/IP)
• Telnet-based Command Line Interface (CLI)
• SNMP monitor and control of platform, I/O modules, and network interfaces
• Multi-level username/password access control with LDAP-based authentication
• Comprehensive monitoring for health, status, and component presence

Built-In Test Utilities

• 2047 BERT test capability for Serial I/O Modules and network interfaces
• Network throughput test with real-time performance monitor
• IRIG time decoder test for IRIG I/O Modules
• Internal software-looping features for Serial I/O and IRIG I/O Modules
• Start-up/power-up or manually initiated self-diagnostics

Time/Data Correlation

• Maintains phase relationships between serial data and analog time
  
• Channel-to-channel skew less than 100 ms
  
• Configurable delay offset with fractional bit-period resolution

ION-6107 Timing Distribution Module

• Dual external reference timing inputs (2.048 MHz, RS 422, 120-Ohm termination)
• Stratum 3E internal reference
• Automatic failover among primary external reference, secondary external reference, and internal reference
• Two rear-panel DB-15 female connectors for external reference inputs

ION-6204 Quad Serial I/O Module

• Four full duplex serial ports per module
• Data rates from 1 Kbps to 5 Mbps per port with automatic rate tracking
• EIA 530 DCE transmit and receive signaling
• Synchronous or isochronous serial data
• Full duplex data rates must be symmetric in synchronous mode
• Support for symmetric or asymmetric data rates in isochronous mode
• Adaptive (tracks receive data rate) or fixed (user defined rate) receive timing
• Internal (DCE source) or external (DTE source) transmit timing
• Recovered transmit timing for isochronous data without clock
• Four rear-panel DB-15 female connectors

IRIG Time I/O Modules

• Two (ION-6302) or four (ION-6304) IRIG ports per module
• IRIG-A, -B, or -G and NASA-36 time formats
• AM and DC level shift (TTL) signal formats
• Programmable input termination (75 Ohm or 1 kOhm)
• Input signal level 1 to 20 Vp p
• Programmable output level
• Output signal level 1 to 10 Vp p
• Eight rear-panel BNC connectors (four for input, four for output)