DSR Status During Local Loopback
Choosing option 6 in the Software Switch Menu takes you to the DSR Loop Status Menu (below). This option controls the behavior of the DSR output during local loopback. To force DSR high (ON) during local loopback, enable this option. To force DSR low (OFF) during a local loopback, disable it.
Rate Converter/DTE Rate
Choosing option 7 in the Software Switch Menu takes you to the Rate Adapter/DTE Rate Menu (opposite page). The Model 2500RC Series rate converter adapts a 56 Kbps or 64 Kbps line rate to slower DTE data rates. Set the Rate Converter to match the DTE data rate. If the DTE data rate is the same as the line rate, disable rate conversion by selecting item 6 on this menu.
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NOTE: For DTE data rates of 56 kbps or 64 kbps, set the rate adapter to “Line Rate = DTE Rate”, and set the Line Rate to 56 or 64 kbps, respectively. For DTE rate of 57.6 kbps, set rate adapter to “Line Rate = DTE Rate”, set line rate to 56 kbps, set DTE for two stop bits, and set CSU/DSU character length to “11 bits”.
DTE Loop Control
Choosing option 8 in the Software Switch Menu takes you to the DTE Loop Control Menu (below). The local and remote loopbacks on the Model 2500RC Series can be controlled from the DTE interface by raising or lowering the LL and RL signals. To allow the DTE to control these loopbacks in this manner, enable this option. Disable if you want the Model 2500RC Series to ignore these signals.
Clock Mode
Choosing option 9 in the Software Switch Menu takes you to the Clock Mode Menu (below).
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