IBM manual 14RS/6000 Enterprise Server Model H Series Users Guide

expect "ð\r" or "OK\r\n" timeout 2	# Confirm successful command.
send "ATVðXðSð=ð\r"	# Numeric response code
	# AT compatible messages
	# Auto-Answer disabled
expect "ð\r" timeout 2	# Confirm commands successful.
done	#
error:	# Handle unexpected modem
	# responses.

expect "8\r" or "7\r" or "4\r" or "3\r" delay 2

done

C-14RS/6000 Enterprise Server Model H Series User's Guide