
 =======================================
| Oh DATU, my DATU                      |
| Compiled by: Cuebiz (Team BlackSheep) |
 =======================================

Introduction
------------
  The Direct Access Test Unit, also known as DATU, has been somewhat the latest craze in the
phreaking scene.  There are tons of people getting/sharing dialups, testing lines - trying to
figure out how everything is put together. If you DID NOT know, DATU dialup's are used by
linemen to test phone-lines for trouble; period. The Clone has written a REALLY GREAT file on
the subject of using DATU, so I wont be discussing it; read his file, because it covers just 
about everything. In this file, I'd like to explain to you how everything is connected together
just so you can kinda marvel at how much equiptment is actually involved. Now, the following
text is EXACTLY what I have in my DATU RT Users Guide; just so you know what Iam talking about.

/* Start DATU manual */

                                      Harris Dracon Division
                                     The DATU RT Users Guide

1. Dial DATU Access number
2. Enter password
3. Dial seven digit subscriber number
4. DATU will respond "CONNECTED TO 
   XXX-XXXX", "OK", or "CONNECTED TO
   XXX-XXXX, BUSY LINE, AUDIO MONITOR"
   Non pair gain ines proceed to step 7
   Note: If busy line, DATU will not access the
   DC By-Pass Pair or the Metallic Acess Unit
5. SLC lines: if line is idle DATU will respond
   "PAIR GAIN LINE" followed by "Processing 
   ("Processing" may be repeated for up to 25
   seconds.) DATU will voice message:

   Single party line }  (Good)
   Multi party line  }  Followed by
   Coin Line         }  "ENTER RT NUMBER"
   Channel Not Available (no/bad Channel test Results)
   PGTC Failure/By Pass  If same recording is heard
     Pair Busy           repeatedly, alert supervisor
   Pair Gain System Alarm (Alert Supervisor)

6. If good/bad Channel test results, enter the 
   RT number dial "*" to end ("**" toggles on 
   or off with Alpha mode). Enter Pair Number,
   dial "*" to end.
   Dial "0 *" to use existing DC TEST Pair.
   DATU will connect to the By-Pass Pair or
   call the Metallic Access Unit in the RT, except
   when By-Pass is busy or Pair Gain system is 
   in Alarm.

7. LINE PREPERATION FUNCTION DIAL CODES:
 2 = Audio Monitor
33 = Short Tip and Ring to ground
37 = Short Ring to ground (Tip open)
38 = Short Tip to ground (Ring open)
44 = High Level Tone on Tip and Ring
47 = High Level Tone on Ring (Tip grounded)
48 = High Level Tone on Tip (Ring grounded)
 5 = Low Level Tone
 6 = Open Line
 7 = Short Line (Tip to Ring Short)
 9 = Permanent Signal Release
 # = New Subscriber Line
## = Force Disconnect
 * = Continue line preparation function after dis
     connect (system programmable from 1 to 99
     minutes); enter number of minutes after "*"
Single Line Access:
 1. Dial the DATU access number
 2. Enter the user password
 3. Enter the "*" and subscriber number for non-
    pair gain lines or Enter "**" and subscriber's
    number for pair gain lines and then enter RT
    number. Dial "*" to end. Enter Pair Number. Dial
    "*" to end.
 4. Enter Function Desired
 5. Enter number of minutes to apply condition
 6. Hand up and wait 30 seconds for DATU
    to access and condition line, (90 seconds for
    (RT connection).

Alpha Character Codes:
[space]=11     A=21     F=33     K=52     P=71     U=82     Z=94
      -=12     B=22     G=41     L=53     Q=74     V=83
      ,=13     C=23     H=42     M=61     R=72     W=91
      -=14     D=31     I=43     N=62     S=73     X=92
      /=15     E=32     J=51     Q=63     T=81     Y=93

/* End DATU manual */
   


Acronym help
------------
SLC = Subscriber Line Carrier 
RT = Remote Terminal
PGTC = Pair Gain Test Controller



The Diagram
-----------
   You should at least have a clue of what you've just read. Now, what really happens 
when you connect onto DATU? It seems that you dial into DATU - it picks up - you enter the
code - you enter a line number - DATU grabs it - and you test the line, right? Here's how 
everything is ACTUALLY stacked together. Please dont mind my sloppy ASCII art diagram:


( You )
   :
   : <--- POTS Line
   :                                     CENTRAL OFFICE
   :    +------------------------------------------------------------------------------------+
   :    |                                                                                    |
   :    | +----------+            +-----------+ +-------+  +---------------------------------+
   :    | |          |            |           | | Pair  |  |                +--------------+ |
   +----|-|          |------------:           :-| Gain  |--:----------------:No Test Trunk-: |
        | |          |            |   Pair    | | Test  |  |                +--------------+ |
        | | DATU RT  |            |   Gain    | |Control|  | Switch                        | |
        | |          |            | Applique  | +-------+  | (ESS5, GTD5-EAX, etc)         | |
        | |          |            |           |            |                               | |
        | |+--------+|            |           |            |                               | |
        | || modem  ||---------+  |           |        +---:-----X                +--------+ |
        | |+--------+|         :  |           |        |   |     :                :          |
        | +----------+         :  +-----------+        |   |     :                :          |
        |                      :                       |   |     :                :          |
        |                      +-----------------------+   |     :                :          |
        |                         ^Modem POTS Line^        |     :                :          |
        |                                                  |     :                :          |
        |                                                  +-----:----------------:----------+
        |                                                        |                |          |
        |                                            +-----------+----------------+--------+ |
        |                                            |           :                :        | |
        |               Central Office Terminal ---> |  [ Channel Unit]   [Channel Unit]   | | 
        |                                            |           :                :        | |
        |                                            | +-----+   :                :        | |
        |                                            | |     |   :                :        | |
        |                                            | | MUX |---+                :        | |
        |                                            | |     :--------------------+        | |
        |                                            | +--+--+                             | |
        |                                            |    :                                | |
        |                                            +----:--------------------------------+ |
        +-------------------------------------------------:----------------------------------+
                                                          *
                                                          *           NOTE: MUX = Multiplexer
                                                          *
                                                          *
                                     Cable/Satellite ---> * 
                                                          *
                                                          *
                                                          *
  REMOTE TERMINAL                                         *
+---------------------------------------------------------+----------------------+
|                                                         :                      |
|                                             +-------------------------+        |
|                                             |    MUX (Multiplexer)    |        |
|                                             +-------------------------+        |
|                                                          :         :           |
|               [ Channel Unit]   [ Channel Unit ]         :         :           |
|                  :     :          :      :               :         :           |
|                  :     :          :      :               :         :           |
|                  :     :          :      :               :         :           |
|                  :     :          :      :+--------------+         :           |
|                  :     :          :                                :           |
|                  :     :+---------:--------------------------------:           |
|                  :                :                                            |
|      +-----------+-----------+    : <--- POTS Line                             |
|      |   Channel Test Unit   |    :                                            |
|      +-----------------------+    :                                            |
|             :           :         :                                            |
|POTS Line -> :           :         :                                            |
|             :           :         :                                            |
|             :           :         :...............+                            |
|             :           :                         :                            |
|             :           :                 +-------------------------+          |
|             :           :                 |       :     Metallic    |          |
|             :           :                 |   +-------+  Access     |          |
|             :          +------------------:   | Modem |    Unit     |          |
|             :                             |   +-------+             |          |
|             :                             +-------------------------+          |
|             :                                                                  |
+-------------+------------------------------------------------------------------+
              :
              :
              : <- Still a POTS Line
              :
              :
     ( Line Being Tested )


The above Diagram taken from the Phone Punx Magazine figuire1.gif; I just converted it for your 
ASCII art viewing pleasures.


Conclusion
----------
  Thats it! I know that this file kinda sucks because of its length, but the diagram pretty much 
says it all. If there are any comments, complaints, etc; send them to me at Fonez@ca.tc.


DATU dialup list
----------------
732-530-9935
732-741-9935
732-264-9935
Code=1111

718-424-0157
718-424-0173
718-472-6567
718-460-2775
718-460-4055
718-460-2861
718-460-4155
718-335-7715
718-335-7810
718-335-7832
718-520-1207
718-520-1320
718-520-1153
718-695-0016
718-695-1053
Code=2345

973-482-9935
Code=4300

I'd like to thank my buddy pr0ksy for passing these on.


Websites worth visiting
-----------------------
Http://www.t1s.8k.com          - Telco Inside, duh! Where you can download my DATU .mp3
Http://www.hackcanada.com      - Props to The Clone, read HIS DATU tfile.
Http://www.AmeriPhreak.com     - They've got Notten's DATU post. Read it - informative.
Http://www.twpyhr.com          - Jenn's got the DATU tone before the initial code entry!
Http://www.fly.to/ppn          - The Phone Punx Network. They know EVERYTHING about DATU.
Http://www.31337Phreaking.org  - Home of this ereEt zine, 13370 Phr34k0 h34ds

