Cell Intercom
ClearView
Communications can supply and install a range of cell call and intercom
systems specifically designed for high security applications including
innovative prisoner intercom call points by non-touch sensor. Stainless
steel panels are therefore no longer required since switching and audio
systems are integrated into the cell wall tile. Cell call systems are
typically used in Police Stations, Magistrates Courts, Crown Courts, and
Prisons.
The systems can be interfaced to the CCTV systems allowing camera views to change and recording rates to increase to enable accurate recording of an incident.
The a typical cell call and intercom system comprises:
- Cell substations
- Entrance substations
- Desk top master stations
All substations have one call button and call the master stations by pressing this call button. The calls arrive on a queuing basis. All master stations answer these call requests in this queue. When a master station answers a call it is deleted from the other master stations queue. There are different priorities available to differentiate between alarms, higher priority calls and ordinary calls. The master stations have direct dial keys with LED indication, which can be used to indicate alarms with, or easy call queue handling. Each substation provides inputs and relay volt free outputs.
Features and Functions
Intercom Call; A point to point connection activated by dialling a unique 1 to 9 digit number.
Unidirectional Group Call; A call made by an initiator to a pre-defined group of users who are in listen only mode.
Group Call with talk back; A call made to a pre-defined set of users. Anyone wishing to contribute may hold down the M button to speak to the whole group. Only one speaker at any time.
Privacy; When privacy is switched on, any incoming call has to be answered to establsih a point to point connection.
Divert always; When switched on, any call received is diverted to the intercom number stored.
Divert on Busy; When switched on and the user is busy, the call is diverted to the intercom number stored.
Divert on no answer; With privacy switched on, the call is diverted after a defined system time to the intercom number stored.
Call back request; A call request from an Intercom station is sent to an operator. It inidicates to the operator that someone wants to speak to him. No voice path has been established at this point. Once the operator accepts the call request a voice path will be established and communication can commence.
Conditional call back request; A call request can be configured to have a high priority alarm call depending on a condition. Eg. a single button station, door closed = standard call request, door open = alarm call.
Alarm Call; Alarm calls take priority over point to point calls and group calls. Alarm calls, like group calls, can have diff ere nt priorities. Th ere are 8 priority levels for alarm calls. In a network system alarm calls will clear down other call types to reach remote centrals.
Call Barring; Feedback may be caused when group call receivers are to close to the initiator. Call barring can be set between these devices. Stations are not barred from the group call, they are only barred to receive voice from a particular endpoint.
Background Channel; A background channel can be set up to for example, to listen to music. It can be switched on or off. The back ground channel will suppressed during an intercom or group call.
F-Keys; F-keys are freely programmable, the following functions can be assigned to F-keys.
- Callback
- Personal List
- Directory List
- Call Forwarding
- Direct Key
- Call Diversion
- Door Opener
Custom Tones; The system provides 19 tones wh ere of 5 are fixed for connection tone, privacy tone, group call tone, call waiting tone (group call with talk back) and callback request tone. The other 14 tones can programmed with customised sequences.
Day-Night Switching; This feature is as divert always but it is initiated via digital input.
Display Messaging; Pre-defined messages can be sent to stations with display. For example, in case of an fire alarm the message reads "Evacuate Building Fire" on all stations with a display.
Leave call back message; Leave a call back message on an unattended users display.
Last connection redial; A single button press to restore the last intercom connection (regardless of the initiator).
Push to talk or Duplex mode; One button press to switch between duplex and simplex operation.
Input Monitoring; Digital inputs can be monitored and displayed on a suitable station. Eg. door status closed/open, alarm etc.
Call Controlling; A feature known as call controlling wh ere it's necessary to suppress calls from a specific station.
Station Display; The station display shows an event and/or is used to configure station settings. Some of the texts are fixed wh ere as others can be customized.
Station LED; Some station LED´s are freely programable to visually indicate the status of an event. On, Off, blinking at 250msec, blinking at 500msec, blinking at 1000msec.
Door Opener; With a pre-defined button a relay can be energised/de-energised during an intercom call. Typical application is the door opener.
Digital Output ;Relays can be energised/de-energised depending on a configurable call or input status.
Timer Function ; The switch is equipped with timers which can be triggered by an event and after the time has elapsed a function can be initiated.
Diagnostics
The system can be configured to provide extensive preventative diagnostics. This provides the operator to detect failures of the system ahead of a user operation.
Connectivity
Every port can be monitored for connectivity with the remote device, such as an Intercom station or I/O card. This monitoring is achieved with continuous polling of the remote equipment by the central. An alarm is generated and the station is logged off in the event of no reply of the remote equipment.
Control Desk
Different styles of master stations are available dependent on the complexity of the system. The uniform user interface provides a clear overview of conditions and situations for the operating personnel even in large systems and visualises them on the function buttons. Available as desk version or build-in version for integration in system consoles in control rooms.
Control Desks can also be supplied in a metal desk enclosure or can be built in a customer supplied desk. The modular unit can include an Intercom master station, one or more button arrays and a handset. The master station has built-in microphone and speaker with gooseneck microphone versions also available. Suppression of microphone and speaker when handset off-hook to eliminate feedback.
Digital Slave Sub-Station
The Tamper and Vandal Proof Intercom Station is designed specially for prisons and correctional facilities with safety and security for both guards and prisoners in mind.
The station comes with inbuilt scream alarm, assault alarm, light signaling and external controls. The front plate is in 2,5 mm stainless steel and equipped with one vandal proof sensor call button. If the prisoner in some way should manage to open the station, a tamper alarm will be triggered.
If the station is disconnected, or the wires to the station are shorted, a request for action will be generated. Call request form the cell, guard presence and alarm calls are indicated on the guard's intercom station as well as by signal lamps outside the cell and in the guard room.
The station works in a dual redundant mode. If the link to the intercom exchange fails, the lamp signalling will still work. If the lamp signalling fails, all intercom signalling will remain intact.
Vandal and Weather resistant station
The vandal and weather resistant intercom station is available with a number of options to accommodate a wide range of applications. The in-built DSP provides a large feature set such as adjustable microphone gain, speaker volume and frequency response.
Main features:
- Surface or flush mount
- One, two or three vandal resistant buttons
- Built-in electret microphone
- 2W Speaker
- In call LED
- UPN connection
- Front plate available in anodised aluminium or stainless steel
- Power supplied from central
- Call priority programmable with diff ere nt call tones
- Tamper alarm
- Circuit and function control
- One CAT 5 cable providing all services