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                       INTRODUCTION                                          
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 This option in RCMTerm allows extra information for the setting up and      
 maintenance of RCM & SSN equipment, such a DIP settings and card layouts.   
                                                                             
 The file used top store this information is titled "RCMTERM.CRD".           
 Any text editor may me used to edit the file.                               
 The rules for editing this file are:                                        
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INDEX.

       1  Extract from TPH 2708(E) para 10.1.4  Combined Channel Unit (CCU)
       2  Extract from TPH 2708(E) para 10.1.4  CCU continued..
       3  Extract from TPH 2708(E) Table 9.(a) CCU SA Switches
       4  Extract from TPH 2708(E) Table 9.(b) CCU SB Switches
       5  Extract from TPH 2708(E) Table 9.(c) CCU SC Switches
       6  Extract from TPH 2708(E) Figure 25.  CCU Card Layout
       7  Cord details between RCM/SSN and (D9) or (D25) PC port.


1.   Extract from TPH 2708(E) TELECOM AUSTRALIA

10.1.4 COMBINED CHANNEL UNIT (CCU) (491901)              TPH2708(E) 10.1.4

As described at the start of section 10, the combined channel unit can be
configured to provide four basic functions:

     -  2 wire exchange end                     IU1
     -  2 wire subscriber end                   IU2
     -  2 wire loop dial both way tie line      IU3
     -  4 wire channel                          IU4

To facilitate the operating options of this unit, 26 Dual In-Line Package (DIP)
switches per channel are provided. These switches are grouped in packages
designated SA, SB and SC. The packages themselves have switches labelled 1
through to 8 or 10. Tables 9 (a, b and c) show the location and orientation of
these switches.
As well as the selection of the channel type (IU1-4), there are a number of
other options which must be understood to ensure the correct operation of the
channel. These are described below:


2.                             TPH2708(E) 10.1.4

     -  When the channel is configured in one of the IU4 modes, the input VF
        impedance may be strapped to either 600 ohms or 1200 ohms.
     -  When the channel is configured for IU1 or IU4x operation, a selection
        between 50Hz and 12kHz metering detection is available.
     -  When the channel is configured for any mode of operation except IU4e,
        a short line option is available. This facility limits the maximum loop
        current when working into shout lines. It should be selected if the
        line resistance, excluding the feedbridge or looping element, is less
        than 500 ohms.
     -  When the channel is configured for IU2 or IU4s operation, an optional
        Equipment Release Unbalance facility (AC Clear) is available.
        If selected, the channel will supply unbalanced normal polarity to the
        line during idle conditions for correct operation in conjunction with
        PABXs requiring this facility.

NOTE... All DIP switch settings not in accordance with any of the following
        tables represent invalid configurations and will cause the channel to
        operate unpreductably.


4.                            TPH2708(E) 10.1.4

     -  4 wire Exchange end                     IU4x
     -  4 wire Subscribers end                  IU4s
     -  4 wire loop dial both way tie line      IU4t
     -  4 wire E & M cailho signalling          IU4e

In the following tables, a blank position indicates that the referred switch
should be off.

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     Configuration               SA Switches & Settings               
     & Options       Ķ
                     SA1 SA2 SA3 SA4 SA5 SA6 SA7 SA8 SA9 SA10
    ͹
     IU1,IU2 or IU3   ON              ON                     
     IU4 600 ohms         ON      ON      ON          ON     
     IU4 1200 ohms            ON  ON      ON  ON  ON      ON 
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                                Table 9.(a)


5.                           TPH2708(E) 10.1.4

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                                    SB Switches & Settings            
        Options        Ķ
                        SB1  SB2  SB3  SB4  SB5  SB6  SB7  SB8 
    ͹
     IU1 50 Hz Meter         ON   ON   ON             ON       
     IU1 12 kHZ Meter        ON   ON   ON        ON            
     IU2                ON        ON   ON                      
     IU3                          ON   ON                      
     IU4x 50 Hz Meter        ON             ON        ON       
     IU4x 12 kHz Meter       ON             ON   ON            
     IU4S,e             ON                  ON                 
     IU4t                                   ON                 
     VF enable                                             ON  
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                                Table 9.(b)


6.                          TPH2708(E) 10.1.4

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                                    SC Switches & Settings            
        Options        Ķ
                        SC1  SC2  SC3  SC4  SC5  SC6  SC7  SC8 
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     IU1,2              ON        ON             ON   ON       
     IU1,2 Short Line             ON                  ON       
     IU3                ON   ON   ON             ON   ON       
     IU3 Short Line          ON   ON                  ON       
     IU4x,s             ON        ON        ON   ON   ON       
     IU4x,s Short Line            ON        ON        ON       
     IU4t               ON        ON        ON   ON   ON       
     IU4t Short Line         ON   ON        ON        ON       
     IU4e                              ON                  ON  
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                                Table 9.(c)


7.   Figure 25. Combined Channel Unit (CCU) Layout    TPH2708(E) 10.1.4
ĿĿ
  1ڿ          ڿ       1 ڿ                          ڿ               Ŀ
ٳ   S1C                S1A               ĿĿ                  
    8                                                          
    1ڿ                10                X5                 PL1A   
      S1B                                                          
    8               CHANNEL 1                                 
   - - - - - - - - - - - - - - - - - - - - - - - - - -               
    1ڿ                 1 ڿ                                         
      S2C                S2A               ĿĿ                
    8                                                        
    1ڿ                10                X105                    
      S2B                                                        
    8               CHANNEL 2                                
   - - - - - - - - - - - - - - - - - - - - - - - - - -               
    1ڿ                 1 ڿ                                         Ŀ
      S3C                S3A               ĿĿ                 
    8                                                   PL1B   
    1ڿ                10                X205                      
Ŀ   S3B                                                          
  8               CHANNEL 3                                



8.         CONNECTION BETWEEN RCM/SSN AND COMPUTER

                 RCM                         PC
                (D25)                   (D9) or (D25)
                  2  2  3
                  3  3  2
                  7  5  7
                  6 Ŀ               1     6
                  8 Ĵ               4     8
                 20                6    20
                  4 Ŀ               7     4
                  5                8     5

  Set up parameters:-
                        Baud rate       2400
                        Parity          None
                        Stop bit        1
                        Char length     8
                        Port            Com 1 or Com 2
