AT&T System 25 - Manual (Page 18)

Leave Word Calling
You can use the Leave Word Calling feature only if the VOICE
POWER Voice Message System (VMS) is connected to your
System 25.
For instructions on obtaining messages left at your telephone,
see your System Administrator.
Leaving Messages
1
2
3
Listen for dial tone, then press # 9 2 .
❑ ❑ ❑
Dial the extension of the other person.
Listen for confirmation tone, then hang up.
NOTE: If you hear fast busy tone instead of confirmation
tone, either the other telephone does not have VMS assigned
to it, or the extension you dialed is invalid.
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