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C-20 TRUNKING TERMS AND CAPABILITIES
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SWITCH A
FOR EACH "SWITCH A" TRUNKING OPTION (LISTED BELOW) — REFER TO THE
CORRESPONDING RECOMMENDED "SWITCH B" TRUNK OPTIONS (RIGHT FACING PAGE).
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GROUP/CALL TYPE DIREC- SUPERVISION SIGNALING
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TION
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GENERIC 2, GS LS RB E&M ISDN INCOMING OUTGOING TIMEOUT
SYSTEM 85, OR
DIMENSION PBX "ALERTING" "ADDRESSING" (NOTE 3)
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18/CO OUT D-2 (NOTE 9)
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19/CO 2W D-1
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Attendant 19
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Completing/IN 28 AUTO IMMED-START
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DOD 29 AUTO WINK-START (NOTE 10)
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20 DMI-MOS DMI-MOS (NOTE 5)
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20/CO 2W D-2 (NOTE 9)
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21/FX IN D-1
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Attendant 19
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Completing 28 AUTO
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29 AUTO (NOTE 4)
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20 DMI-MOS (NOTE 5)
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22/FX OUT D-1
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DOD 19
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28 IMMED-START
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29 WINK-START (NOTE 11)
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20 DMI-MOS (NOTE 5)
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23/FX-DOD OUT D-2 (NOTE 9)
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24/FX 2W D-1
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Attendant 19
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Completing 28 AUTO IMMED-START
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IN/DID 29 AUTO WINK-START (NOTE 4)
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20 DMI-MOS DMI-MOS (NOTE 5)
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25/FX 2W D-2 (NOTE 9)
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Notes:
9. To be used with CO applications that provide a "party test" signal toward the PBX.
10. This trunk type and optional signaling arrangement may be used to build a "Special Access" trunk group. Although other trunk
group types may be more appropriate, this trunk group signaling arrangement may function to provide trunking facilities for
MEGACOM Service.