Sierra Wireless 555 manual Rev 3.3 May.02 161

Chapter 14: The Watcher Menu Options
Table 14-3: General Tab Options
Field	Description
TTY Mode	A TTY (TeleTYpewriter) is a device for
	people with hearing and speech
	impairments. The device allows people to
	communicate over phone systems using a
	typewriter-like keyboard.
	When TTY Mode is set to any value
	besides Off, you can attach a TTY device
	to the headset connector and use a TTY
	device with the AirCard.
	The options in this field are:
	• Off—you don't use a TTY device for
	communicating.
		Installationand Use on Handheld/PocketPCs
	• On (Full)—you use the TTY device for
	receiving and sending messages.
	device to type your message. You
	• On (Talk Only)—you use the TTY
	device to read the other person's
	message. You speak to convey your
	message.
	• On (Hear Only)—you use the TTY
	listen to the other person's message.
	This feature has not been tested in the
	current release.
Update System	All PCs have an internal clock called the
Clock with CDMA	system clock. Depending on your
time during start-	configuration, the time according to this
up	clock is usually displayed:
	• On the Today page, in the top right
	corner of your screen (Pocket PCs)
	• In the status area in the lower right
	corner of the screen (Handheld PCs)
	Generally you would use the Settings
	screen to change the time on the system
	clock. This field gives you the option of
	setting the time of your system clock
	automatically from the CDMA network each
	time you connect. This might be useful to
	you if you frequently change time zones.
	Use the check box to enable and disable
	this feature. (It is enabled when checked.)

Rev 3.3 May.02 161