Abstract: An ISDN or other enhanced bulk delivery telephone signal i processed by a channel bank receiver to preferrably produced a plain old telephone signal output having dialed number and caller I.D. as lead information. This signal is advantageously used by a security station receiver to distinguish different calling alarm panels which may not be uniquely identified by their own address. This information also allows more effective processing of telephone signals received by the security station.

Abstract: An alarm panel of a security system communicates with a remote monitoring arrangement using a cellular communication protocol which deports from the conventional AMPS protocol and is less vulnerable to fraudulent activities. The modified protocol reduces transmissions from the cellular arrangement to the cell site by ignoring query signals. The cellular arrangement continues to monitor received cellular transmissions to provide an assessment of the ability to respond.

Abstract: An improved alarm security system is disclosed which provides caller identification information when an alarm panel completes a telephone communication with a central computer. Such information is automatically provided by the telephone network upon initiation of a telephone communication. The central computer can use this information alone or in combination with other information received from the alarm panel to improve reliability and provide a more effective security system.

Abstract: An automatic bypass switch comprising an electronic switch circuit responsive to voltage signals generated by the delay circuit and armed status of an electronic alarm system. The output of the bypass switch is connected to one or more detection circuits so as to shunt or prevent activation when the control has been armed until the delay circuit has been activated. From this time until the panel has been disarmed and rearmed again, the controlled detection circuit(s) is active and not shunted.

Abstract: A fire alarm control system in which an electronic switch circuit is responsive to an increase input current signal generated by one or more fire detection devices. A local alarm is connected to the electronic switch circuit to indicate an alarm state. A delay timer circuit is connected to the electronic switch circuit and operated thereby to activate a remote alarm after a predetermined time delay. A manual two-position switch is movable to a silence position from its normal position within the time delay to disable the local and remote alarms and movable back to its normal position to cut off power to the detection devices and electronic switch means to unlatch the alarms. A further pair of manually operable switches are provided to instantaneously reactivate the disabled local and remote alarms when the two-position switch is in the normal position.