Telephone Tones & Ringing
Night Service
Dialling Timeout
38GDE00001SAD - Issue 8 January 2000
The phone uses various tones and ringing to indicate calls and other events.
Incoming Calls:
– Repeated Double Ring: External call.
– Repeated Single Ring: Internal call.
During Calls:
– Repeated Single Pip: Another extension is about to intrude or has
intruded on your call.
Outgoing Calls:
– Continuous Tone: Number called unobtainable or set to no calls.
Phone locked, no external calls (or phone is barred).
– Repeated Tone: Busy number (see page 10).
– Dial Tone: Dial number.
– Repeated Single Pip: Phone on divert or no calls (see page 15).
The system takes different areas into and out of night service automatically. It
does this following timetables setup by the System Manager. The effects of
night service vary, but typically they are as follows:
– Lines: The system directs calls to a night desk number or answer phone
extension.
– Phones: The type of calls you can make becomes more restricted, e.g. no
international or long distance calls.
After you start dialling, if you do not dial another digit for several seconds the
system assumes that you have finished dialling. The system then ignores any
further digits that you dial. By default the timeout is 5 seconds though this can
be altered.
Since it is your phone that generates the audible dialling tones, the system's
dialling timeout does not affect calls connected through the system to services
that need to hear additional MF tones (e.g. voice mail systems, BT star
services, etc).
Telephone Features – Page 5
INDeX Standard Telephone User's Guide
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