US Robotics COURIER HST User'smanual page 102

COURIER HST
4. The 300-bps data session is terminated; the modem
sends the message NO CARRIER at 300 bps.
5. A 2400-bps call comes in. The modem responds RING
and CONNECT 2400. These message are sent at the
current bit rate of 300 bps.
6. The computer, receiving the CONNECT 2400 message,
adjusts accordingly to the higher bit rate. The modem
also shifts to 2400 bps.
7. The 2400-bps data session is terminated; the modem
sends the message NO CARRIER at 2400 bps.
8. A 9600-bps call comes in . The modem responds RING
and CONNECT 9600. These message are sent at the
current bit rate of 2400 bps.
9. The computer, receiving the CONNECT 9600 message,
adjusts accordingly to the higher bit rate. The modem
also shifts to 9600 bps.
10. The 9600-bps data session is terminated; the modem
sends the message NO CARRIER at 9600 bps.
Keep in mind that whether or not your computer adjusts to
these rate changes, the Courier automatically shifts to the
connection rate if it is set to &B0.
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