Getting Started
 21
To use the one-touch feature:
•   Press and hold the required numeric key for a few sec-
onds. 
•   Your 
 MTH800 will display the number and act according 
to the programmed feature.
Speaker Control Key 
Press to activate the earpiece (low audio) or speaker 
(high audio), depending on the menu settings.
Aliases (Names)
Aliases are optional names that you can assign to stored 
phone and private numbers (or IDs). To edit an alias, see 
page 76.
Aliases can be up to 12 characters in length and may consist 
of letters, numbers, and spaces.
Aliases are displayed during contact list scrolling or during an 
incoming call. Aliases are also used in alphanumeric search 
to retrieve numbers from your memory list.
Type of Call Menu Setting Key Use
Half-duplex call
(Group*/Private)
Menu > Setup > Group 
Audio > Spkr Cntrl
Speaker On/Off for Group and 
Private Calls
Menu > Setup > Group 
Audio > Always Loud Speaker On/Off for Private 
Call
Full-duplex call
(Private/Phone/
PABX
-------- Controls speaker/earpiece of 
the on-going call,
* In an Emergency Group Call, the voice sounds from the speaker regardless of 
the speaker setting.
6802972C35.book  Page 21  Monday, August 16, 2004  9:22 PM