User manual

Configuring with an ASCII Terminal
Campus-RS Fractional Interface Card User Manual 5-19
Inverting Data Signals
The Fractional Interface Card allows you to invert the SD and RD signals.
Some protocols, such as X.25, use this data inversion to satisfy the ones
density requirement of T1 lines operating in AMI mode. Unless specifically
required by a protocol, do not use data inversion.
There are two settings for the Data Inversion option:
• OFF leaves SD and RD signals in their normal, non-inverted, state.
• ON inverts the SD and RD signals.
To invert the SD and RD signals:
1 From the Data Port Settings menu, type then press . The Invert
Data option changes to the next available setting.
2 Repeat the previous step until the Data Port Settings menu displays the
desired Invert Data setting.
Configuring Output Control Signals
The fractional interface cards provide four standard output control signals:
• RLSD (Receive Line Signal Detect)
• TM (Test Mode)
• DSR (Data Set Ready)
• CTS (Clear to Send)
The operation of each control signal depends upon the specific operating
mode selected. Each control signal can be individually configured for one of
three modes:
• ON forces the control signal to remain on permanently, regardless of any
other control signal activity or changes in unit status.
• OFF forces the control signal to remain off permanently, regardless of
any other control signal activity or changes in unit status.
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