BCM50 cable organizer

Connectors of telephones are terminated to a cable organizer for the sake of the easier alignment of devices and for facilitating the measurements. Cable organizer consists of two parts. One of these parts at the side of the exchange contains termination of interfaces of the outgoing port circuits. Another part at the side of subscribers is applicable for attaching subscriber lines. Wiring the two sides together, we can determine the alignment of devices and ports.
Explication of the BCM 50 RJ-21 (TELCON) connector to the cable organizer box:


           +------------------------------+------------------------------+
Analog line|+1+_+-+ +-+   +2+_+-+         |+3+_+-+ +-+   +4+_+-+         |
           |+-+ +-+ +-+   +-+ +-+         |+-+ +-+ +-+   +-+ +-+         |
Line number 061           062              063           064

Analog tel |+5+_+-+ +-+   +6+_+-+         |+7+_+-+ +-+   +8+_+-+         |
           |+-+ +-+ +-+   +-+ +-+         |+-+ +-+ +-+   +-+ +-+         |
     Port:  413           414              415           416

           |+10_+-+ +-+   +11_+-+         |+12_+-+ +-+   +13_+-+         |
           |+-+ +-+ +-+   +-+ +-+         |+-+ +-+ +-+   +-+ +-+         |
           Aux            Page             Page          Music
          ringer          Relay            Output        Source in

Digital tel|+14_+-+ +-+   +15_+-+         |+16_+-+ +-+   +17_+-+         |
           |+-+ +-+ +-+   +-+ +-+         |+-+ +-+ +-+   +-+ +-+         |
     Port:  412           411              410           409
           (5004)        (5003)           (5002)        (5001)
Digital tel|+18_+-+ +-+   +19 +-+         |+20_+-+ +-+   +21_+-+         |
           |+-+ + + +-+   + + +-+         |+-+ + + +-+   +-+ +-+         |
     Port:  408           407              406           405
           (5006)        (5005)
Digital tel|+22_+-+ +-+   +23_+-+         |+24_+-+ +-+   +25_+-+         |
           |+-+ +-+ +-+   +-+ +-+         |+-+ +-+ +-+   + + +-+         |
     Port:  404           403              402           401
                                          (5012)titk.   (5011)főnök
           +------------------------------|------------------------------+
                                        MH-2

     Page output: a sound frequency paging signal generated by the exchange
     can be connected to the external paging amplifier (radio)     

     Page relay: a relay contact to control the  paging amplifier.