OPERATION
General
The V-1101A contains the required circuitry to allow paging access from most types of telephone systems.
To operate correctly, the V-1101A must receive two signals: a ground on the Holding Ground input and either a momentary AC signal on the Signal Input lead or a momentary or continuous ground on the Ground Start lead.
The unit may be wired for loop start operation for use on PABX's or electronic key systems (Figure 3). In this application the unit will supply the –24 Vdc talk battery required by the telephone system trunk card. The holding ground and start leads required by the page unit will be supplied internally in this case.
Connections for access by a 1A2 line button are similar to those above, except that the unit is cross-connected directly to the button of the telephone instead of to a trunk card (Figure 4). A spare set of relay contacts is used to switch lamp voltage to the phones.
When connecting the V-1101A to an intercom number (Figure 5) four leads are required from the intercom: Tip and Ring to supply audio, a Page Control Lead, and a Signal Lead. The Page Control Lead must supply a Ground whenever the intercom is in use, and must be open when the intercom is idle. This lead is used to release the V-1101A at the end of a page. The intercom may be wired to use 10 Vac, 18 Vac, or 105 Vac for signaling. The intercom signal must be momentary, i.e., the signal must be present for approximately 1 second and then drop off. A continuous signal will prevent the V-1101A from operating.
When connecting the V-1101A to a page port (Figure
6)a Ground must be connected through the dry contact closure of the telephone system page card to both the Holding Ground and the Ground Start terminals of the V-1101A.
Once the V-1101A has been activated it will remove the background music (if connected) from the speakers and allow you to page. The unit will stay active until you hang up, at which time the holding ground will be removed and the unit will be allowed to release.
TECHNICAL ASSISTANCE
When trouble is reported, verify the unit is properly connected and there are no broken connections leading to this unit.
Assistance in troubleshooting is available from the factory. When calling, you should have a VOM and a test set and be calling from the job site. Call (540) 563-2000 and ask for Technical Support, or call
(540)767-1555 for Valcom 24-hour Automated Support or visit our website at http://www.valcom.com.
Valcom equipment is not field repairable. Valcom, Inc. maintains service facilities in Roanoke, VA. Should repairs be necessary, attach a tag to the unit clearly stating company name, address, phone number, contact person, and the nature of the problem.
Send the unit to:
Valcom, Inc.
Repair & Return Dept.
5614 Hollins Road
Roanoke, VA 24019-5056
