AT&T Merlin Legend MLX-10 User Manual page 31

Quick Start
To Identify Ringing Calls
Your phone uses four distinctive ringing patterns to help you
identify different types of incoming calls.
Ring
One long ring
One long ring and
one short ring
One long ring and
two short rings
One long ring and
three short rings
2-2 Identifying Call Types
Meaning
An inside call
An outside call
An outside call transferred
to you or a returning
transferred call
(See "Transfer" in Chapter 5.)
A returning Callback call
(See "Callback" in Chapter 5.)