Nortel Networks CTA 500dm - Manual (Page 34)

34 AT commands
CTA 500 dm On Line Guide P0873832 Issue 05
Return to On-line Data State
The Return to On-line Data State Command
O
instructs the CTA 500dm to return to the On-line Data State.
Use this command to determine the number of B-channels active for
rate adaptation protocols that use more than one B-channel, since the
aggregate network rate is returned by the CONNECT indication.
Result Codes
CONNECT rate Appears when the connection is successfully
resumed, where rate is the aggregate network rate (56000, 64000,
112000, or 128000).
Immediately after this connection rate is sent, the CTA 500dm enters
the data mode.
The 112000 and 128000 rates are sent only if both channels on the
TCM link are in use.
NO CARRIER Appears when the connection could not be
reestablished.
Enter Download State
The Enter Download State Command
Y[password]
instructs the CTA 500dm to enter the download state and prepare for
the transfer of a Þle that updates the Flash EPROM. Sets the baud
rate at 9600 bit/s. The password is always Nor*.
After the Þle transfer has begun, disconnecting the CTA 500dm from
the attached PC or from the power supply, will put it into the
Download State when it is powered back up. This is caused by loss
of the Flash EPROM contents.
Immediately after the command is executed, the CTA 500dm sends
a single line indication
SEND PROGRAM FILE USING
YMODEM-G (periodically sending GÕs until the download is
started). The CTA 500dm then enters the download mode.
After Flash programming is complete, a single line indication of OK
is sent.