AT&T 7500 series manual Analog Data Modem Side, Digital Data ⎜DATA Module Side 103/HOST Access

C-30

TRUNKING TERMS AND CAPABILITIES

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SWITCH A

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FOR EACH "SWITCH A" TRUNKING OPTION (LISTED BELOW) — REFER TO THE

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CORRESPONDING RECOMMENDED "SWITCH B" TRUNK OPTIONS (RIGHT FACING PAGE).

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⎜GROUP/CALL TYPE

⎜⎜DIREC- ⎜⎜

SUPERVISION

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SIGNALING

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TION

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GENERIC 2,

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INCOMING

OUTGOING

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GS

⎜ LS

⎜ RB

⎜ E&M

⎜ ISDN

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⎜TIMEOUT

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SYSTEM 85, OR

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DIMENSION PBX

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"ALERTING"

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"ADDRESSING"

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(NOTE 3)

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101/DATA

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2W

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27

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IMMED-START

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IMMED-START

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ANALOG DATA

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MODEM SIDE

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102/DATA

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2W

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18

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⎜⎜DCP S-CHANNEL

⎜DCP S-CHANNEL

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(Note 16)

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DIGITAL DATA

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⎜DATA MODULE SIDE

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103/HOST ACCESS

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2W

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18

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⎜⎜DCP S-CHANNEL

⎜DCP S-CHANNEL

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(Note 16)

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LINE SIDE

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104/HOST ACCESS

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2W

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18

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⎜⎜DCP S-CHANNEL

⎜DCP S-CHANNEL

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(Note 16)

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TRUNK SIDE

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105/3B5

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2W

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18

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⎜⎜DCP S-CHANNEL

⎜DCP S-CHANNEL

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(Note 16)

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106/EIA

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2W

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18

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⎜⎜DCP S-CHANNEL

⎜DCP S-CHANNEL

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(Note 16)

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107/ISN/EIA

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2W

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18

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DCP S-CHANNEL

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(Note 16)

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DCP S-CHANNEL

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108/DMI

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2W

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D-5

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WINK-START

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IMMED-START

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20

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DMI-MOS

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DMI-MOS

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(Note 5)

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109/DMI

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2W

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⎜ D-11

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WINK-START

⎜WINK-START OR

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(Note 13)

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DELAY-DIAL

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20

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DMI-MOS

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DMI-MOS

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(Note 4)

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120/ISDN DYNAMIC

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2W

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20

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(Note 17)

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(Note 17)

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Notes:

16.Requires signaling type 18.

17.The type of signaling being used depends upon the particular trunk type and service being provided for a particular call. Each call and each channel may require a different signaling method than the previous call, depending upon the different types of calls and call volume.