AT&T 7500 series Network Router User Manual


 
C-22 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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26/WATS IN D-1
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19
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28 AUTO
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29 AUTO (NOTE 4)
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20 DMI-MOS (NOTE 5)
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27/WATS OUT D-1 DIAL-TONE
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(DOD or 19
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TSPS Access) 28 IMMED-START
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29 WINK-START (NOTE 12)
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20 DMI-MOS (NOTE 5)
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28/WATS-DOD OUT D-2 DIAL-TONE (NOTE 9)
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30/DID IN 30 IMMED-START
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4 IMMED-START
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20 DMI-MOS (NOTE 5)
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31/DID IN D-3 WINK-START
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11 WINK-START
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20 DMI-MOS (NOTE 5)
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32/TIE IN D-4 IMMED-START
(DIAL-REPEATING)
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33/TIE OUT 31 IMMED-START
(AUTOMATIC)
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27 ANALOG LINE
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34/TIE OUT D-4 IMMED-START
(DIAL-REPEATING)
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1 GRD START
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Notes:
12. This trunk type and optional signaling arrangement may be used to build a "Special Access" trunk group. This trunk group and
signaling arrangement may function to provide trunking facilities for MEGACOM and SDN Services. Dependent upon trunk
type selection at the 4 ESS toll switch, wither DTMF or MF signaling hardware must be equipped.