PHILIPS KBX3 & KBX6
Extension Buttons - used to call another extension.
EXCH button - used to connect a terminal to an exchange line.
F button - used to set up conference calls and to program the Divert and Exchange ringing facilities.
R button - Provides a Recall function when connected to a PABX.
Exchange Lamp - Has five states:
- terminal is being called while connected to an exchange line.
OFF (at all terminals) - exchange line free
ON (at all terminals) - exchange line engaged
FAST FLASH (one terminal only) - exchange line is being held by that terminal
SLOW FLASH (two terminals)
FLASHING in time with exchange ringing - incoming exchange call.
Internal Calling Device - Exchange ringing if programmed. Even ringing indicates an intercom call.
Making and Receiving Intercom Calls
Lift the handset and press the Extension button for the required extension. (If the Intercom is in use speech will be heard as the handset is lifted). The internal calling device in the called extension will ring on an even cadence (on, off, on, off ---).
Lifting the handset at the called terminal connects the call. The call is cleared by both parties replacing their handsets.
Making an Exchange Call
Lift the handset and press a free EXCH button (lamp not lit). The lamp for that exchange line will light on all terminals, indicating that the line is engaged. The call can now be set up by direct dialling or connection through the operator.
The hook switch (cradle switch) can be flashed to obtain the exchange operatorís attention, or the F button flashed to obtain a PBX operatorís attention. The call is cleared by both parties replacing their handsets.
Receiving an Exchange Call
An incoming call (exchange ringing) causes the associated exchange lamp on every terminal to flash and the calling device to ring at those terminals pro≠grammed to receive exchange ringing (see Exchange Ringing below).
The call may be answered from any terminal by lift≠ing the handset and pressing the associated EXCH button. The Exchange lamps on all terminals will change to lit steadily, indicating that the exchange line is engaged, and the ringing will cease.
When the only terminal programmed to receive exchange ringing is engaged, an incoming call on that line will ring all other free terminals.
The call is cleared by both parties replacing their handsets.
Holding an Exchange Call
Press the associated EXCH button once. This holds the exchange call and connects the terminal to the Intercom, the associated Exchange lamp flashes rapidly. The holding terminal can now make or receive an Intercom or, with a KBX 6 System, make or receive another exchange call if the other exchange line is free. Alternatively, the required Extension button may be pressed to hold the Exchange line and ring the Extension.
In either case, if the handset is replaced without re≠connecting the held call, the holding terminalís calling device will ring at a fast rate until the call is reconnected.
The held exchange call is reconnected by pressing the associated EXCH button again, when the exchange lamp returns to its steady-on state.
There is no limit to the number of calls which may be made or extensions rung to obtain an answer while holding an exchange call. In the KBX 6 System, a terminal can hold both exchange lines simultaneously.
Transferring an Exchange Call
Press the required Extension button, or the connected EXCH button followed by the required Extension button: the exchange line is held and the Extension rung. When the Extension answers, the call may be transferred by replacing the handset at the transferring terminal or pressing the associated EXCH button at the called terminal. In the latter case, the transferring terminal will remain connected to the Intercom and make make a follow-on call.
An exchange call may be, transferred as many times as required.
This facility enables any two terminals to be connected to an exchange call.
With an exchange call in progress, press the required Extension button (this holds the exchange call). When the called Extension answers, press the F button to connect both terminals to the held exchange call and to free the intercom.
The conference call set up is cleared when both terminals have replaced their handsets.
Power Fail Operation
Terminal 1 (and Terminal 4 for Exchange Line 2 in a KBX 6) is the power fail terminal. Exchange calls to or from these terminals remain connected at power failure. During power failure, a power fail terminal can make and receive exchange calls. Calls in progress at power restoration are not interrupted.
All other terminals and facilities are inoperative and any calls in progress at power failure are lost.
Night service (power off) is provided as follows:
Terminal 1 in a KBX 3 or Terminals 1 and 4 in a KBX 6. This is similar to the Power Fail operation.
An External Extension connected in place of Terminal 1 (refer to External Extensions Option).
Incoming exchange calls (Exchange Line 1 only in a KBX 6) ring the sounder of the External Extension. The call is answered by lifting the handset.
Outgoing exchange calls are made by lifting the handset of the External Extension and waiting approximately 10 to 15 seconds for exchange dial tone or the local exchange operator to answer.
The Divert and Exchange Ringing facilities can be programmed into or out of a Terminal at any time.
It should be noted that facilities programmed in are lost if the power to the Central Control Unit is switched off or fails. They must therefore be re≠programmed at restoration of power.
Any terminal can divert all incoming calls to another terminal as shown below:
* Terminal 1 to Terminal 2
Terminal 2 to Terminal 1
Terminal 3 to Terminal 1
Terminal 4 to Terminal 2
* Terminal 5 to Terminal 6
* Terminal 6 to Terminal 5
* Where a pair of terminals can only divert to each other, only one terminal at a time can use the Divert facility.
To initiate a Divert, lift the handset, press the F button, followed by the Extension 1 button and re≠place the handset. All calls will now be diverted to the terminal as above.
The Divert facility is cancelled by lifting the handset, on the Diverting terminal, pressing the F button followed by the Extension 2 button, and replacing the handset.
Any terminal may be programmed to receive incoming exchange ringing on its calling device, in addition to the flashing Exchange lamp signalling.
Lift the handset, press the F button followed by the EXCH button for which ringing is required and replace the handset. Repeat the procedure for the other EXCH button if ringing is required from both exchange lines.
Programmed exchange ringing is cancelled by lifting the handset, pressing the F button twice and replacing the handset. Under Power Fail conditions Exchange Line 1 is connected to Terminal 1 and Exchange Line 2 is connected to Terminal 2 automatically.
The various options available on the KBX 3 and KBX 6 may be implemented or cancelled at any time by the local Service Engineer.
EXCLUSIVE LINE (KBX 6 Only)
This option allows exclusive use of Exchange Line 2 by Terminal 4 or its diverted terminal. Once an external call has been set up to Terminal 4, it can be transferred to any other terminal in the normal way.
When the exclusive line option is operative, diversion from Terminal 4 is possible in two modes and is controlled from Terminal 4:
DIVERT. All calls are diverted to Terminal 1, not Terminal 2 as described under Divert. A diversion is implemented by lifting the handset, pressing the F button followed by the Extension 1 button and replacing the handset. All calls will be diverted to Terminal 1 until the Divert is cancelled.
EXCLUSIVE DIVERT. All calls are diverted to Terminal 1 except incoming calls on Exchange Line 2. An Exclusive Divert is implemented by lifting the handset, pressing the F button followed by the Extension 3 button, and replacing the handset. All calls except those on Exchange Line 2 will be diverted to Terminal 1 until the Divert is cancelled.
The Divert or Exclusive Divert facilities are cancelled by lifting the handset, pressing the F button followed by the Extension 2 button, and replacing the handset.
The Exclusive Divert may be changed to non-exclusive divert by lifting the handset, pressing the F button followed by the Extension 1 button, and replacing the handset. All calls will now be diverted to Terminal 1.
External Extensions with limited facilities may be fitted in place of Terminals 1 and/or 3.
During normal (daytime) use, lifting the handset connects the External Extension to Terminal 2. The call can then be connected to another KBX Terminal (Terminal 2 rings the terminal and replaces the handset when the call is answered or transfers the External Extension to an Exchange Line - presses a free exchange button and replaces the handset when the Exchange Line is connected).
If Terminal 2 fails to answer within 15 seconds, an External Extension connected in place of Terminal 1 will be automatically connected to a free Exchange Line.
C-wire signalling may be implemented by operation of Option Switch No.3.
Last revised: November 09, 2006