General DataComm SpectraComm ADT 16-Port, Installation & Operation Manual, Page: 14 / 76

Introduction & Specifications Product Overview
1-4 SpectraComm ADT 076R172-000
Installation and Operation Manual Issue 2
Throughput Performance
Typical Throughput Conditions
It is expected that the traffic patterns of typical applications will be bursty in nature, thereby allowing
all sixteen or thirty-two async ports to deliver data without loss under typical traffic conditions.
End-to-End Flow Control
The SC-ADT implements flow-control between the async end-devices to avoid buffer overflow and
data loss during extreme traffic conditions. End devices that respond to hardware/software flow
control will hold-off data transmissions to avoid traffic loss.
Worst-case Throughput Conditions
During extreme traffic conditions, the SC-ADT will handle an aggregate rate of 800,000 bits per
second, full duplex. This translates to 50,000 bits per second per port if using sixteen async ports
and 25,000 bits per second per port if using thirty-two async ports.
Note
Extreme traffic conditions are defined as continuous async data (i.e. “non-bursty”) with end-to-end flow-
control required.
Diagnostics and Statistics
• Generates/answers pings
• Tests Contact States
• Loopbacks on Async ports
• Transmit and Receive packet counts on Ethernet interface
• Transmit and Receive byte counts on Ethernet interface
• Transmit and Receive character counts on Async ports
SC-ADT Security
SC-ADT devices are multi-level password-protected and also provide inactivity timers. For periods
of heightened security, authorized users can configure access controls to filter out specific
protocols, such as HTTP, SNMP and/or TFTP access to the unit.