Delayed ringing time

Step by step information at the link below.
Brother Fax T96
The F/T Mode is used to allow the fax machine and the telephones to share the same telephone line. When a call comes in, the fax machine and all extension telephones on that line will ring according to the number of rings you have set for the Ring Delay.
When the Ring Delay is completed, the fax machine will answer the call and determine if it is a fax call or a telephone (voice) call.
The fax machine can determine this by the signal it is receiving on the telephone line. If someone is sending a fax automatically , the sending fax machine will transmit a fax tone (a series of beeps every 3 seconds).
If your fax machine hears these tones, it will receive the fax.

If the fax machine does not hear any fax tones, it assumes it is a telephone (voice) call and will begin ringing the F/T ring tones (double ring) for the length of time you selected for the F/T Ring Time. These tones will only ring on the fax machine's handset (extension or external phones will not ring). At the end of the F/T ring time the fax machine will go into the receive mode in order to receive a manual fax.
(If the call was a voice call and was not answered, the caller will hear the fax receive tones also).

• If you answer the call before the fax machine(during the ring delay period) and determine it is a fax, you can transfer the fax to the fax machine for receiving.
  
  
• If you answer the call on an "extension" phone and hear a beep every 3 seconds (automatic fax) or silence (manual fax), press *51 or *91 for New Zealand (remote activation code) on the telephone keypad, wait to hear the fax machine turn on (chirping sounds) and then hang up.
  
  
• If you answer on the handset of the fax machine and hear a beep every 3 seconds or silence, press the Fax Start or Start/Copy key on the control panel of the fax machine and then hang up the handset.
  
  
• If you answer a call on an "extension" phone during the F/T Ring Time, you will hear the F/T ring tones.
  To release the call from the fax machine, press #51 or #91 for New Zealand (remote deactivation code) on the telephone keypad and you can speak to the calling party.
  
  
• If you pick up the handset of the fax machine during the F/T ring time, you may talk to the calling party immediately.

You need to check the setup ..

The telephone line which is coming from out should be connected to the line 1 of the printer and Telephone answering machine should be connected to Line 2 .

2. You also need to check that after how many rings the Telephone answering machine answers the call you have to keep the "Rings to answer" 2 less than that of Telephone answering machine.

Lets assume that your Telephone Answering Machine answers the call after 4 rings then keep the rings to answer in All in One to 2

How to set Rings to Answer

1. Press the Setup button on the Front panel of the printer

2. Scroll Down and go to Basic Fax Setup - Select it

3. Scroll down and got to - Rings to Answer - Select it

4. Set the Rings here and then try Fax

it will fix the problem :)

Setting the Ring Delay
The Ring Delay sets the number of times the
MFC rings before it answers in Fax Only or
Fax/Tel mode. If you have extension
phones on the same line as the MFC or
subscribe to the telephone company’s
Distinctive Ring service, keep the Ring Delay
setting of 4.
(See Operation from extension telephones on
page A-4 and Easy Receive on page 4-3.)
1 If it is not illuminated in green, press
(Fax).
2 Press Menu/Set, 2, 1, 1.
3 Press ▲ or ▼ to select how many times
the line rings before the MFC answers
(00 - 04).
Press Menu/Set.
(If you select 00, the line won’t ring at
all.)
4 Press Stop/Exit.
Initial Setup
1.Receive Mode
Current Receive Mode
Fax : Fax Only
F/T : Fax/Tel
TAD : External TAD
Mnl : Manual
Setup Receive
1.Ring Delay

This feature determines how each outside line or pool assigned to an extension rings. You can specify Immediate Ring, Delayed Ring (telephone rings after a 20-second delay), or No Ring. Delayed Ring is useful for backup coverage on shared lines or pools, such as for secretaries who cover each other’s lines. No Ring is useful for all extensions except 10 when an operator answers all calls, or for telephones with no regular users, such as those in conference rooms. To change the way outside lines or pools ring at an extension:
To change the way outside lines or pools ring at an extension: 1 Press "Feature" , "00", "System Program ", "Central Tel Program" at extension 10 or 11.
2 Enter the number of the extension to be programmed for Line Ringing. The green lights next to the line or pool buttons show the current Line Ringing settings for all lines or pools assigned to the extension. (If a line or pool is not assigned to a button, the green light next to that button is off.) The following ringing options can be shown by the green light next to the line or pool button: • Immediate Ring — on steady • Delayed Ring — flashes slowly • No Ring — flutters quickly • Immediate Ring is the factory setting for lines; No Ring is the factory setting for pools.
3 Press the line or pool button until the button light shows the correct setting (the setting for the currently selected line or pool also appears on the display).
4 Continue programming, or exit programming mode.

You will need to know which line(s), and on which station(s) (extensions) you want each line to ring.

Programming is accomplished as follows:

Default Installer Password = INTERCOM *746
You can enable different ringing assignments for individual lines and stations.
You must program ringing assignments on a per station/per line basis. You can control ringing for every line that has appearance at a station assigning immediate, or direct, ringing to some lines and delayed ringing to others. NOTE: Do not program direct ringing for lines that you assign to the direct department calling feature.
To Program: 1. Dial 54. “STA/LINE CONFIG.”
2. Dial 1 “DIRECT RING”
—OR—
Dial 2. “DELAY RING”
NOTE: For no station ringing, skip step 3 and make no line selection.
3. Select line ports for ringing (LED On = Selected Ports).
—Line port 1–14 = Dial 01–14 or press A1–A14
—Line port 15, 16 = Dial 15, 16 or press B1, B2
—Line port 17–24 = Dial 17–24 or press HOLD then press A1–A8.
4. Dial # when all line ports are selected.
5. Select station ports (LED On = Feature Assigned)
—Station 10–57: Dial 10–57 or press C10–C57.
6. Dial * when all station ports are selected
—OR—
dial ** for next station/line ringing assignment
—OR—
dial ***for configuration mode.
To clear current setting, repeat procedure.

Use an LCD speakerphone and a DSS/BLF console at station port 11 or 13 to see which features are assigned to individual stations. While you can install any non-LCD digital telephone and use it for programming, visual feedback of the programming operations will not be available. You must always keep the handset of the LCD speakerphone on-hook while you use this telephone to program the system.

Auto Attendant
Answer Lines
1 – Feature 983
2 – Log: Dial 1020000 (3-digit DNs) or 120000 (2-digit DNs)
3 – Press AA
4 – Press LINES
5 – Line number: Dial line number (001-xxx).
6 – Line:xxx Ans:No Press CHNG to AA if auto attendant will always answer theline. If a Night Service key will be used to activate auto attendant answering, leave Ans: at No.
7 – If line has been changed to Ans:AA, press * then press TABLE.
8 – If Table:1 is OK press RINGS. (Table 1 is the default greeting table. Change to a different table (1-4) if alternate answering is required on the line being programmed.)
9 – Rings:0 – Press CHNG, dial number of rings before auto attendant answers the line, or leave at 0 for immediate answering. Allow at least 2 rings if CLID is in use.
10 – Repeat for each line to be programmed.

Notes For Night Service Mode Auto Attendant Answering
If the auto attendant will only answer lines in night service mode, line answering should be set to No as per step 6 above. Using night service will cause the AA to answer lines immediately.

I would suggest getting a new one, but BE SURE you check to see if it will work with VoIP. I have the HP 6210 and it has problems with VoIP as well. Go to a place where you can test it at home and be sure you can return it if it has issues. Best Buy, or Staples are pretty good with returns, but SAVE the receipt! LOL... Sorry I couldn't offer better news! //Don

To select or change your Receive Mode
1 If it is not illuminated in green, press (Fax).
2 Press Menu/Set, 0, 1.
3 Press ▲ or ▼ to select Fax Only,
Fax/Tel, External TAD or
Manual.
Press Menu/Set.
4 Press Stop/Exit.
Setting the Ring Delay
The Ring Delay sets the number of times the MFC rings before it
answers in Fax Only or Fax/Tel mode. If you have extension
phones on the same line as the MFC or subscribe to the telephone
company’s Distinctive Ring service, keep the Ring Delay setting of 4.
(See Operation from extension telephones on page A-7 and Easy
Receive on page 4-4.)
1 If it is not illuminated in green, press (Fax).
2 Press Menu/Set, 2, 1, 1.
3 Press ▲ or ▼ to select how many
times the line rings before the MFC
answers (00, 01, 02, 03 or 04).
Press Menu/Set.
(If you select 00, the line won’t ring at all.)
4 Press Stop/Exit.
Initial Setup
1.Receive Mode
Current Receive Mode
Fax : Fax Only
F/T : Fax/Tel
TAD : External TAD
Mnl : Manual
Setup Receive
1.Ring Delay

Press the 'RECEIVE MODE' button on the right side of the control panel, its next to the large 'FAX START' button. Here are your options :

Select Receive Mode
MANUAL
—You must answer all calls yourself. If you hear fax tones, press
Fax Start
to begin receiving the fax, then hang up. You can use this mode with
Distinctive Ringing. (See
Distinctive Ring
, page 8-1.)
FAX ONLY
—The fax machine automatically answers every call as a fax call. You
cannot receive a voice call, but you can dial out and make a voice call.
FAX/TEL
—The fax machine automatically answers every call. If the call is a fax, it
prints the fax. If the call is not a fax, it signals you with a double-ring (ring-ring),
different from the phone company ringing, to alert you to pick up the call. If you select
this setting, you’ll need to set the Ring Delay and F/T Ring Time features (on the
following pages). If you have extension phones on the same line as the fax machine,
set Ring Delay to 4. (See
For FAX/TEL Mode Only
, page 5-5.)
TAD:ANSWER MACH.
—This is the only setting in which you can use an external
answering machine. Your telephone answering device is connected to your fax
machine, and answers every call. Once the TAD answers, the fax machine listens for
fax tones. If it detects fax tones, it prints the fax.
The TAD setting works
only
with an external telephone answering device (TAD); it
does not work with telephone company Voice Mail. Ring Delay and F/T Ring Time
do
not
work in this setting.

This si str8 from the manual! The Ring Delay sets the number of times the MFC rings before it answers in Fax Only or Fax/Tel mode. If you have extension phones on the same line as the MFC or subscribe to the telephone company?s Distinctive Ring service, keep the Ring Delay setting of 4. 1 If it is not illuminated in green, press (Fax). 2 Press Menu/Set, 2, 1, 1. 3 Press ▲ or ▼ to select how many times the line rings before the MFC answers (00, 01, 02, 03 or 04). Press Menu/Set. (If you select 00, the line won?t ring at all.) 4 Press Stop/Exit. Full Manual URL http://welcome.solutions.brother.com/BSC/public/files/dlf/doc000219/MFC-210C_UsaEngUsr_B.pdf Hope this helps! Regards, Babb