User`s guide

1(2)
Datum/Date Rev
Dokumentnr/DocumentnrUppgjord/Prepared
Dokansv/Godkänd - Doc respons/Approved Kontr/Checked Tillhör/Referens-File/Reference
99-07-15 C
443/155 34-ASB 150 02 Uen
FACILITY DESCRIPTION
Faktaansvarig - Subject responsible
SEA/EBBMP Pfleger H.
SEA/EBBMP ASB 150 02
SEA/EBBX/E
RING AND
TONE SIGNALS
Definition
A ring signal is a signal to inform the recipient that a
call is waiting.
On system telephones the ring signal is issued from a
program-controlled tone ringer in the telephone.
On analogue telephones the ring signal is issued from
a built-in bell that is driven by ring voltage from the
extension board (ELU-A/MFU).
Tone signals are used to supply connection messages
to the extension user.
Both ring signals and tone signals are determined by
the specifications of the relevant market.
Use
A ring signal can be used in all situations when an
incoming call is presented on a traffic function key.
Operation
None.
Capacity
Each traffic function key can be programmed for five
different types of ring signal.
Ring and tone cadences for different markets are
stored in EPROM.
Limitations
Only one call at a time can be ringing at each
individual telephone.
If a system telephone is busy, that is a traffic function
key shows busy indication, new calls on other traffic
functions will automatically be announced by a single
muted ring burst.
Programming
Ring signal diagrams
The ring diagrams are stored in an EPROM and can
be selected via command.
2001
Ring signal scheme
The ring signal scheme controls the ring signals being
sent to extensions. The ring signal scheme defines the
type of ring signal to be used in different traffic cases
and the cadence for each type of ring signal.
This command defines the ring signal scheme for the
system.
Type of ring signal
The type of ring signal can be programmed for each
individual traffic function key.
The ring signal type can be programmed either via
system programming or individual programming.
For individual programming, see document FACILITY
DESCRIPTION (155 34-ASB 150 02 Uen).
443.fm
Database reference