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Glossary
Services
A service identification (ID) (e.g. telephony, fax) is transmitted in ISDN when an ISDN subscriber is called. The caller is only connected if the called terminal has the same service ID. This prevents wrong connections of two different terminal types
(e.g. phone and fax).
DT - network
With the Microsoft Windows data transmission network your computer can accept a connection to an internet service provider.
ISDN (Integrated Services Digital Network)
All services (speech and data) can now be transmitted in one network.
Incoming external connection
Connection to a terminal of the telecommunications system set up by an external subscriber with the phone number of the telecommunications system.
Configuration
Setting (programming) the functions of the telecommunications system with a PC by means of a configuration program.
Terminals
Appliances which you connect as internal subscribers of the telecommunications system.
Analog terminals such as telephones, answering machines, fax machines, combi-devices
(telephone, fax and possibly answering machine in one unit), modem.
Line (B-channel/S0 basic access)
You can connect an external S0 basic access to your ISDN telecommunications system. Every external S0 basic access behaves like two conventional analog lines. You therefore have two lines (B-channels) on which you can make telephone calls (local, long distance or overseas calls).
External
A distinction is made between internal and external calls when telephoning in a telecommunications system. External calls are calls to subscribers which are not connected to your telecommunications system. Connections between terminals of your telecommunications system and other terminals at your multiequipment access are therefore also external connections. The local tariff is usually charged for such connections.
Dual tone multi-frequency dialling method
(DTMF)
Every dialled digit is assigned a certain tone.
Telephones with this dialling method require a signal key (refer back key R) on the telecommunications system.
MoH (Music on Hold)
A waiting external subscriber hears music whilst the connection is on hold, e.g. when a call is forwarded.
External seizure (seize outside line)
Seizure of a line (B-channel) to call an external subscriber.
Outgoing external connection
Connection to an external subscriber set up from a terminal of the telecommunications system by dialling an external phone number.
Pulse dialling method (PD)
Every dialled digit is assigned a fixed number of pauses. The pauses are audible in the earphone when dialling.
Internal
Internal calls are calls which subscribers in the telecommunication system hold with each other by dialling the internal phone number. These calls are generally free.
MSN (Multiple Subscriber Number)
The multiple subscriber number is one of the phone numbers under which the multi-equipment access can be reached.
A
NTBA (Network Termination for ISDN Basic
Access)
The network operator lays his copper cables up to this access point (S0 basic access). You connect your telecommunications system and other ISDN terminals to it.
Ringing assignment
In the ringing assignment you define which terminals of the telecommunications system are to ring when an external call is received. Should only one terminal ring or several terminals simultaneously?
Appendix A - 1
Ringing assignments for external calls are: day service, night service and forwarding (internal).
You can switch over between day and night service at any time from any telephone.
Internal call forwarding – An incoming external call which is not answered within a certain time is forwarded. The terminals of the telecommunications system defined in the call forwarding then ring. The number of rings until forwarding is adjustable.
Switch box
You can call the switch box of your telecommunications system externally and for example switch the ringing assignment, set up a diversion or monitor a room with a post-dialled
* procedure.
You can reach the switch box externally by a multiple subscriber number (MSN) specially assigned to the switch box. The switch box is protected against unauthorised access by the box PIN.
Signal key R (refer back)
A key on the telephone which you have to press when you want to refer back to another subscriber during a call. The signal key must have the flash function, i.e. must be able to effect a short pause.
USB
U
niversal
S
erial
B
us is a serial interface with transmission rate up to 12 Mbit/s. A USB connection can serve several items of equipment simultaneously. These can be added or removed during the current opreation.
If something goes wrong
Inspections
- In the case of malfunctions in the telecommunications system, please check the system is being operated correctly as described in the operating instructions.
- Check that the connections of the terminals and the telecommunications system are correctly plugged in.
- If you cannot eliminate a fault, your dealer will be glad to help.
N. B.! You can only use the ISDN features of your
AGFEO ISDN telecommunications system if your network operator provides these features.
Switching off the special dialling tone
You hear the special dialling tone when you lift your telephone’s handset.
You hear the special dialling tone when do not disturb, automatic dialling or a diversion are active.
h * S O N q
Lift handset
Special dialling tone
(deactivate functions)
Acknowledgement tone
You can deactivate all functions which initiate a special dialling tone with the
*
procedure.
ª
Replace handset
Power failure
You cannot dial internally or externally during a power failure.
When power supply is recovered:
- the telecommunications system works again with the previously configured program. All the settings made by the programming mode or the
PC program are retained providing the programming mode was properly terminated.
A - 2 Appendix
- callbacks are deleted
- the connections parked in the telecommunications system are deleted
- the connection cost totals and connection data records are saved.
Behaviour in the event of faults
Fault
Programming of telecommunications system unclear
Possible causes
No dialling tone on Power failure lifting the handset
Defective terminal
Defective installation
Remedy
Reset the telecommunications system
Reset the telecommunications system to the as-delivered state and reprogram
Check mains connection, fuses
Check terminal at another connection
Check the terminals in the socket and on the telecommunications system
Switch off do not disturb No internal calls are received
No external calls are received
Do not disturb switched on
(special dialling tone)
Diversion to another telephone (internal/external)
(special dialling tone)
Wrong MSN entered
MSN – internal subscriber assignment missing
Do not disturb switched on
(special dialling tone)
Diversion to another telephone (internal/external)
(special dialling tone)
Switch off diversion
Enter right MSN, delete all if necessary
Assign internal subscriber to the MSN
(ringing assignment)
Switch off do not disturb
Switch off diversion
ISDN call forwarding is active Deactivate ISDN call forwarding
No outgoing external No authorisation connection possible programmed
Cost limit reached
Check authorisation, access to ISDN network, assignment of barred numbers
Transfer of external The refer back key r on the call (refer back) not telephone is set as an earth possible key
Inform system administrator
Set the telephone to DTMF (tone dialling) and the refer back key to flash
A
Incorrect flash time Set the flash time on the telephone or on the telecommunications system for the terminal connection concerned
Appendix A - 3
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