US Robotics COURIER User Manual page 18

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COURIER HIGH SPEED MODEMS
Programmable Nonvolatile Memory
You can tailor your own default settings and store them in non-
volatile random access memory (NVRAM). Each time the
Courier is powered on, it operates at the settings you've
specified.
Link Rate Negotiation
The Courier automatically lowers its link rate to match a lower
rate of a remote modem, in both Originate and Answer Modes,
allowing connections with a wide range of installed modems.
Link Diagnostics
After each call, you can display a Link Diagnostics screen con-
taining information about the last call, including the number of
data characters transferred, line statistics, the call's rate and the
reason the call was disconnected.
Modem Diagnostics
New CCITT V.54 loopback testing with the &T command
options, and earlier Courier Register 516 test options are
available. The modem performs three loopback tests: analog,
digital, and remote digital. See Appendix F for information.
Inactivity Timer
You can set the modem to automatically hang up after a speci-
fied number of minutes if there is no activity on the phone line.
Call Duration Reporting
The modem records the duration of your calls in hours, minutes,
and seconds. This feature enables you to display and print an
audit of your calling activities. You can optionally use the
modem clock as a real-time clock.
Call Progress Detection
An optional set of result codes (screen messages) lets you know
when a line is busy, a person rather than a modem has answered
the phone, there is no dial tone, or the distant phone is ringing.
Modem Settings Displays
On command, the modem displays its current settings, a handy
way to check your transmission rate, S-Registers and other oper-
ational controls. The modem also displays the defaults stored in
Features and Compatibility 1-3