Technician’s Handbook
76
Table 8: Direct Inward Dial/Loop Trunk Summary
Signal
DID/Loop Trunk PBX
Outgoing
DID/Loop Trunk PBX
Incoming
Seize
Tip-Ring leads are activated
(shorted); Loop Current flows
in line
Tip-Ring leads are
activated (shorted); Loop
Current flows in line
Seize
Acknowledgment
Immediate Dial - Tip-Ring
leads stay active
Outgoing Wink - Tip-Ring
leads toggle
Loop Current direction Delay
Dial - Tip-Ring leads reverse
Loop Current following
seizure; reverse again when
ready to go
Immediate Dial - Tip-Ring
leads stay active.
Incoming Wink - Tip-Ring
leads toggle Loop Current
direction
Digits
Loop Current toggled
(Rotary) or DTMF
Loop Current toggled
(Rotary) or DTMF
Stop Dial
Tip-Ring leads reverse Loop
Current direction; forward
again when ready
-
Receipt of Digits
Audible Tones - Busy,
Reorder, Ringback
dependent upon digits dialed
and called party condition
Audible Tones - Busy,
Reorder, Ringback
generated and sent to
calling party dependent
upon digits received and
state of called party
Answer
Supervision
Current flow in Tip-Ring is
reversed
Current flow in Tip-Ring is
reversed
Disconnect
Supervision
Near or Far-end termination:
Loop Current broken
Near or Far-end
termination: Loop Current
is broken
Содержание SX-200 EL
Страница 1: ...TECHNICIAN S HANDBOOK LIGHTWARE 19 RELEASE 3 0 ...
Страница 11: ...Chapter 1 Introduction ...
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Страница 32: ...Technician s Handbook 22 ...
Страница 33: ...Chapter 2 Routine Maintenance ...
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Страница 55: ...Chapter 3 Troubleshooting and Repair ...
Страница 56: ...Technician s Handbook 46 ...
Страница 88: ...Technician s Handbook 78 Figure 16 E M Trunk Type I 2 wire ...
Страница 110: ...Technician s Handbook 100 ...
Страница 111: ...Chapter 4 Programming ...
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Страница 169: ...Chapter 5 Installation ...
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Страница 175: ...Installation 165 Installation SX 200 ML FD Cabinet Card Assignment Figure 24 SX 200 ML FD Cabinet Card Assignment ...
Страница 176: ...Technician s Handbook 166 SX 200 LIGHT Cabinet Card Assignment Figure 25 SX 200 LIGHT Cabinet Card Assignment ...
Страница 239: ...Chapter 6 Maintenance Commands ...
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Страница 258: ...Technician s Handbook 248 ...
Страница 261: ...Notes ...
Страница 262: ...Technician s Handbook Notes ...