System Requirements For Touch-Tone Receivers - AT&T MERLIN LEGEND Release 3.1 Maintenance And Troubleshooting Manual

System Requirements
for Touch-Tone Receivers
11 If these tests fail, replace the MFM.
Table 3–2. MLX Telephone Display Buttons
Button
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Inspct
Each unlabeled display button
System Requirements
for Touch-Tone Receivers
The following symptoms indicate that the system needs more touch-tone
receivers (TTRs).
Single-line telephone users do not get dial tone when they lift the
handset to dial out.
The voice messaging system fails to transfer calls.
Calls fail to ring or go to coverage prematurely.
NOTE:
If these symptoms are present, use the following steps to calculate the system
requirements for touch-tone receivers.
1 Determine the number of TTRs required for the voice messaging system
(if present) from Table 3–3.
3–8
Telephone Problems
Display

nn ; where nn is 1–10, depending
on which button you press.