STS 3192–OW Order-Wire Unit
■Document Purpose
▲This document provides general and installation information for the Charles Industries 3192-OW Order-Wire module.
■Equipment Function
▲The 3192-OW Order-Wire module is a plug-in unit of the Charles Industries STS–3192 System. The 3192–OW provides power to the field order wire facility. Order Wire call initiated from the field can access a local Class 5 line circuit or be accessed locally at the 3192–OW.
●FUNCTIONAL DESCRIPTION
■Table 1 describes the 3192–OW front panel functions and the switch function on the PCB. Figure 2 shows a schematic block diagram of the 3192-OW for applications reference.
■The 3192–OW provides nominal –48V current to the order wire cable facility, to support order wire pairs having up to 2100 ohms of resistance. The 3192–OW provides a integral battery boost circuit that, when enabled, supports order wire pairs having up to 4300 ohms resistance.
■The 3192–OW can provide a 2W interface to a local switch line circuit. This feature allows field order wire calls to be routed to a local dial tone facility.
■Order Wire calls can only be initiated from the field. When the 3192–OW detects a field off-hook, it repeats the off-hook to the Class 5 switch line circuit (if wired). The unit will support DTMF or DP addressing to this port.
■Order Wire calls from the field can access the 3192–OW locally by going off-hook, then momentarily on-hook for 5 to 15 seconds, then back off-hook. This action will release any connections to the Switch line port, turn on the OW LED, and place a ground on Pin 7 (Order Wire Alarm). This will indicate to local personnel that the a OW call is in process. Local personnel can answer the call by jacking in a 4W Order Wire tel set. This will release the OW alarm and extinguish the OW LED.
■Order Wire alarms can also be silenced by operating the front-panel-mounted ACO switch.
■The 3192–OW provides external connections which allow several Order Wire units to be multiplied at a location. These connections (pins 1, 3, A, and 4) are multiplied, and allow field Order Wire calls to be accessed from any 3192–OW unit, on the multiplied connection.
■The 3192–OW provides a front panel OW LINE jack. This jack provides a 2W monitor access to the OW facility.
■The 3192–OW also provides a front panel TEL SET IN jack. A 2W tel set inserted into this jack will break away the OW facility, and access the Order Wire multiple circuit.
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User's Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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September 1999 |
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Issue 1 |
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39 KB |
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