Newsgroup: it.comp.hardware.modem
Titolo: Trust v92 pci - problemi

Ho il modem in oggetto, che un bel giorno, nel periodo in cui veniva
introdotto il v92, ha smesso di collegarsi sui 45k e si collega ora a 26.4 o
28.8 o al max a 31.2k
Ho provato i driver del cd, quelli del sito della trust, quelli della intel
(che costruisce il chipset), ho accorciato il cavo telefonico ecc. Niente da
fare.
Perchč si ostina a collegarsi cosě lento? Eppure andava bene!
La cosa che mi sorprende e che altri modem sulla stessa presa vanno
decentemente (un conexant, che di solito sono anche scarsi, va a 45k,
usrobotics ext anche lui sui 45, un lucent addirittura sui 50k.
S.O. win2000 sp3, senza stringhe aggiuntive per il modem.
magari posso mandarvi il log?
mi date una mano ragazzi e ragazze?
grazie mille
ovr

 magari posso mandarvi il log?
No grazie
ATTENZIONE che non sia un problema di calore
news:it.comp.hardware
news:it.comp.hardware.overclock
ATX3+MS=V34,1
e vedi se migliora  poi provi il V90 "frenato"
ATX3S10=254+MS=V90,1,33600,45333
AT+MS=?   in C:\Programmi\Accessori\HyperTerminal\HYPERTRM.EXE
per essere sicuro al 100% della esatta sequenza di comandi AT validi
Velocita' ottenute con il protocollo V.90:
56000, 54667, 53333, 52000, 50667, 49333, 48000, 46667, 45333, 44000, 42667, 41333, 40000, 38667, 37333, 36000, 34667, 33333,
32000, 30667, 29333 e 28000
--
Fosco

 ha scritto nel messaggio
news:bfp3fc$n8o$1...@lacerta.tiscalinet.it...

        Se trovi una soluzione postamela perchč anche il mio fa cosě
Ciao

 Perchè si ostina a collegarsi così lento? Eppure andava bene!
    Dev'essere colpa della centrale Telecom di zona

 Dev'essere colpa della centrale Telecom di zona
Possibile ... puoi provare alla telecom 187 ma non dire che
e' per il modem (non sono tenuti a supportarne la velocita')
ma di' solo che hai problemi generici  e se loro ne sanno
niente ... di solito ti fanno un controllodella linea
Prova a forzare il V34 e vedi se qualcosa migliora
x modem interno (avanzate del modem altre impostazioni)
ATX3S10=254+MS=V34,1
Driver Modem FULL
http://fernando.darocha.free.fr/page/modem.htm
Here is a repository of AT command sets grouped by chipset type:
http://www.vee90.net/atcom/
http://www.uli.it/config/Modem/Comandi_AT/body_comandi_at.html#uno
Configurazione modem  (stringa inizializzazione)
http://help.virgilio.it/guide/dettaglio.jsp?id=3187&step=3544
--
Fosco

 
http://help.virgilio.it/guide/dettaglio.jsp?id=3187&step=3544
    Provato di tutto, la colpa è del concentratore MD4 al quale sono
collegato.
Il 187 non ti dice nulla al riguarda, da la colpa al provider o al PC o alla
linea al momento disturbata, invece ci sono zone in Italia dove telecom ha
installato questa apparecchiatura per quadruplicare le linee uscenti.
Sin che non cambiano le apparecchiature non posso avere ne una decente,
Telelcom garantisce la fonia e 9,6kb per il fax, il resto a chi arriva è
gratis.
Sotto ho riportato una parte del funzionamento dell'apparato.
Note: Within nine months from the publication of the mention of the grant of
the European patent, any person may give
notice to the European Patent Office of opposition to the European patent
granted. Notice of opposition shall be filed in
a written reasoned statement. It shall not be deemed to have been filed
until the opposition fee has been paid. (Art.
99(1) European Patent Convention).
Printed by Jouve, 75001 PARIS (FR)
Europäisches Patentamt
European Patent Office
Office européen des brevets
(19)
EP 0 530 153 B1 CORRIGENDUM issued on 14.04.1999 (bibliography updates
included) - See p. 3 - 5
*EP000530153B1*
(11) EP 0 530 153 B1
(12) EUROPEAN PATENT SPECIFICATION
(45) Date of publication and mention
of the grant of the patent:
05.08.1998 Bulletin 1998/32
(21) Application number: 92830280.1
(22) Date of filing: 29.05.1992
(51) Int Cl.6: H04M 3/30
(54) Intermediate telephone line sectioning device
Zwischentrennvorrichtung für Fernsprechleitung
Dispositif de sectionnement intermédiaire pour ligne téléphonique
(84) Designated Contracting States:
AT BE CH DE DK ES FR GB GR IT LI LU MC NL
PT SE
(30) Priority: 29.08.1991 IT RM910642
01.04.1992 IT RM920230
(43) Date of publication of application:
03.03.1993 Bulletin 1993/09
(73) Proprietor: CIRTE MANIFATTURIERA S.p.A.
I-80133 Napoli (IT)
(72) Inventor: Carnevale, Roberto
I-80131 Napoli (IT)
(74) Representative: Fiammenghi, Carlo et al
c/o Fiammenghi-Fiammenghi
Via Quattro Fontane, No. 31
00184 Roma (IT)
(56) References cited:
EP-A- 0 072 721 EP-A- 0 144 072
DE-A- 3 444 872 US-A- 3 843 848
US-A- 4 550 225
EP 0 530 153 B1
Description
The present invention relates to an intermediate telephone line sectioning
device for trouble shooting in the telephone
line sections.
According to the known state of art the diagnosis of the telephone line
conditions is carried out by equipment
located in the work center of the telephone exchange socalled A.C.L. by SIP,
the Italian Telephone Company.
By such equipment the electrical parameters of the telephone line from the
exchange to the user's telephone set through
the telephone network can be monitored. As known such parameters are: low
insulation between line wires and to the
ground (zero potential), short circuits, breaks and foreign voltages on the
line.
Such parameters reflect the internal and external conditions (i.e. relative
to the user's line) of the low frequency telephone
system.
Such method of the previous state of art requires, however, the intervention
of a technician by the user so as to personally
establish whether the trouble is to be ascribed to the user's line; the
sectioning of the line is manually carried
out by the technician himself so as to detect to what section of the
telephone line the trouble is to be ascribed, i.e.
either the user's line or the tie line.
Of course, the main problem of such method is the labor and traveling cost.
Another problem is the time of diagnosis
which should be abbreviated.
European patent application 0072721 (Gadonna) relates to an apparatus for
the diagnosis of the telephone line
conditions which works disconnecting and reconnecting a telephone line in
response to different voltage and frequency
signals from the telephone exchange. The method of estimating the telephone
line conditions includes a plurality of
current and voltage measurements, specific for a telephone system.
European patent application 144072 (Fujitsu Limited) relates to a subscriber
line radio concentration system which
can automatically carry out a loop back test from a master station to a
subscriber station.
To attain this functionality in a concentration system of a plurality of
subscriber terminal stations, through radio chanels
to a master station, at least one of said subscriber terminal station
comprises an automatic response equipment. This
method applies particularly to radio telephone apparatuses and employes
techniques and circuits usual for this kind
of telephonic equipment.
An object of the present invention is to provide an intermediate cable
telephone line sectioning device which temporally
disconnects, detects the sectioning by a signal fed to the telephone
exchange and hence, reconnects the line and the
subscriber equipment.
It's a further object of the present invention to provide an intermediate
telephone line sectioning device which estimate
the conditions of the telephone line within a short controlled time period.
The invention such as claimed and illustrated in detail by a particular
embodiment solves the problem of providing
an almost immediate diagnosis of the line conditions and of establishing on
the base of such a diagnosis whether the
trouble is to be ascribed to the user's line or not.
Such object is achived by providing the intermediate line disconnecting
switch between the user's line and the distribution
telephone cable so as to effectively separate the two systems: internal
(user) line and external line.
This intermediate telephone line sectioning device placed between the
distribution telephone line and the user's line
for trouble shooting in the telephone line sections includes:
- means for stabilizing an alternating voltage from the telephone exchange
to a predetermined value,
- telephone line sectioning means and an oscillator circuit for generating a
sinusoidal voltage confirming that the
sectioning and the re-making of the telephone line has occurred,
- capacitive means including a capacitor which is charged by said voltage
from the telephone exchange,
- means for generating first and second reference voltages,
- first switching means for switching its output from digital logic "0" to
"1" when voltage on said capacitive means
overcomes the second reference voltage,
- second switching means for switching its output from digital logic "0" to
"1" when said voltage on capacitive means
overcomes the first reference voltage,
- first active device formed of a transistor energizing a first coil of a
two-step relay, under the control of first switching
means, when the latter switches its output from "0" to "1" and thus
producing the sectioning of the telephone line
of user through the disconnection of two contacts,
- second active device including a second transistor energizing a second
coil of the relais, under the control of
second switching means, when the latter switches its output from "0" to "1",
thus closing said contacts which
disconnect the telephone line of the user,
- sectioning means including first and second coil of the relais and feeding
(better conveying) the oscillator sinusoidal
voltage confirming that the sectioning and the re-making of the telephone
line has occurred together with said
alternate voltage from the exchange,
EP 0 530 153 B1
- coupling means including a capacitor transmitting the phonic and digital
signals with the minimum attenuation, and
- resetting means for setting to zero the value of the voltage at the ends
of said capacitive means charged by the
alternate voltage from the exchange during the pause between telephone
calls.
Another embodyment of the device according to the present invention provides
an intermediate telephone line sectioning
circuit, placed between the distribution telephone line and the user's line
including:
- means for transforming the alternate voltage of the telephone line to a
d.c. voltage as well as for stabilizing said
voltage and for blocking the d.c. componenet of the telephone line,
- telephone line sectioning means coupled with a buffer oscillator circuit,
- means for supplying a main reference voltage and two very stable secondary
voltages,
- means supplied with the main reference voltage for generating the time
constant necessary for sectioning and remaking
the telephone line,
- means supplied with the secondary voltages for comparing the two secondary
voltages supplying at its two outputs
as a result of such comparison two logic level switched from 0 to 1 with a
delay relative to said generated time
constants, and
- means for transforming the voltages at its inputs to a pulse of the order
of some milliseconds, the succession of
two of such pulses is applied to said telephone line sectioning means for
operating the sectioning and the remaking
of the telephone line.
The real method according to the present invention, provides an intermediate
telephone line sectioning, in which the
detection is carried out by suppling a particular voltage from the exchange
during a varying time lenght by means of
this voltage the intermediate line sectioning device opens the contacts for
sectioning the telephone line of users's
installation and generates a signal of varying frequency which is added to
said sectioning voltage. The method is
characterized in that for the detection a main reference voltage and two
very stable secondary reference voltages are
generated, and these two voltages are applied to a voltage comparator which
compares the input voltage with the two
reference voltages; the overcoming of the first reference voltage occurs
after an adjustable time period, while the
overcoming of the second reference voltage occurs after a further adjustable
time period generally different from the
first period, thus the eventual switching of the logic level of the outputs
from 0 to 1 with adjustable delay times is caused,
said outputs are applied to a converter generating two pulses (one for each
output) having the length of some milliseconds:
these two pulses are the sectioning signal and the re-making signal of the
telephone line, respectively.
The advantages of the invention consist in that the line diagnosis and
trouble shooting time are reduced to the
minimum due to the fact that the disconnecting switch of the invention is
transparent to the measurement carried out
by the control center.
The invention will now be described according to a preferred embodiment by
way of a non-limitative example with
reference to the drawings, in which:
Fig. 1 shows a schematic view of internal and external telephone line and
the placing of the intermediate line
sectioning device of the present invention;
Fig. 2 is a block diagram of the circuit of the intermediate line sectioning
device including several modules (or
components).
Fig. 3 is a detailed circuit diagram of the intermediate line sectioning
device according to the present invention;
Fig. 4 is a block diagram of an alternate embodiment of the intermediate
line sectioning device according to the
invention.
As shown in Fig. 1, telephone exchange 1 includes a module 3 generating an
alternate voltage of 70 volts rms at
a frequency of 50 Hz and a measuring instrument 2 for the line parameters
which in the Italian Telephon Company SIP
is called A.C.L. The main telephone line 4a connects telephone exchange 1 to
distribution cabinet 5, and the telephone
distribution line 4b connects the latter to the external user's line 7
ending in the jack 8 of telephone set 9. The intermediate
line disconnecting switch 6 is placed between telephone distribution line 4b
and external user's line 7.
When module 3 generates a voltage of 70 volts rms at 50 Hz with a current
limited to 80 mA during 2.5 seconds, the
intermediate line disconnecting switch 6 opens the contacts sectioning the
telephone line of the user's system. Under
such circumstances, as described thereafter, the intermediate line
disconnecting switch 6 generates a signal at 90 kHz
on the telephone lines 4a, 4b. Such signal is detected and coded by module
3.
By generating during 4 seconds the same alternate voltage through module 3,
the intermediate line disconnecting
EP 0 530 153 B1
switch 6 closes the contacts sectioning the telephone line after the test of
the same, as described thereafter.
The signal at 90 kHz fed to the telephone line 4a, 4b is detected by a
receiver included in the measuring device 2 and
fed through an electronic interface system to the monitors of the operators
in the measurement control center, thus
signalling that the telephone line is sectioned.
With reference to Fig. 2 there are shown fourteen modules (or components) of
the intermediate line disconnecting
switch of the present invention, the circuit diagram of which is shown in
detail in Fig. 3.
The d.c. component of the telephone line signal is stopped by capacitor C5,
and the alternate component from module
3 is rectified by Graetz bridge formed of diodes D7, D8, D9, D10 of the type
1N 4007 included in module MD1.
Module MD2 which is formed of a resistance R11 of 4700 ohms, an electrolytic
capacitor C4 of 100 microfarads, and
a Zener diode D5 of 12 volts levels through capacitor C11 and stabilizes to
12 volts through Zener diode D5 the pulsating
voltage from module MD1.
Module MD3 is formed of resistance R7 of 1000 ohms and Zener diode D4 of 4.7
volts. It stabilizes to V1=4.7 volts the
d.c. voltage from module MD2. Such voltage V1=4.7 volts charges the
electrolytic capacitor C3 of 10 microfarads
during 2.5 seconds (with a tolerance of +0.5 seconds) through resistance R6.
The latter two components, resistance
R6 and capacitor C3, are included in module MD4 the function of which is of
timing to T1=2.5 seconds the sectioning
time of the telephone line.
The charging voltage of capacitor C3 is applied to pin 5 of the integrated
circuit U2B of the type LM 2904 (forming a
half section of the integrated circuit U2 of the type LM 2904).
The charging voltage of capacitor C3 is applied to pin 3 of integrated
circuit U2A of the type LM 2904 included in module
MD7, said integrated circuit comparing such voltage with a reference voltage
V1 which is generated by module MD5
formed of the resistance R2 of 22 kohms and diodes D1, D2, D3 and is applied
to pin 2 of the same integrated circuit.
Diodes D1, D2, D3 are of the type 1N 4148.
When the voltage at pin 3 overcomes the reference voltage V1, integrated
circuit U2A switches its output at pin 1 from
"0" to "1" and together with resistances R3 of 1 kohm, R4 of 10 kohms and a
tantalium capacitor C1 of 0.47 microfarad,
which components are included in module MD7, supplies the base of a
transistor Q1 of the type 2N 2222 included in
module MD10 with a positive pulse of short duration, thus causing one of the
two coils of a 3 V relay K1 (included in
module MD12) to be shortly energized and then the opening of the two
contacts of the relay so as to cause the telephone
line to be sectioned. Concurrently an operational amplifier U2B of the type
LM 2904 included in module MD11 supplies
the Hartley oscillator formed of components R9 of 47 ohm, R10 of 39 kohm, C7
of 1 microfarad, C8 of 4700 pF, coil
L1, and transistor Q4 of the type 2N 2222, where Rx indicate resistances and
Cx capacitors. All of such components
are included in module MD11. The characteristics of coil L1 are shown in
Table 1.
Hartley oscillator generates a sinusoidal wave having a frequency of 90 kHz
± 5 kHz and peak to peak voltage of 5
volts which is fed together with the sectioning voltage of the intermediate
disconnecting switch from the control device
of the latter mentioned above with reference to Fig. 1 through the primary
winding of coil L1 and capacitor C9 of 47000
pF, and through module MD12 formed of the two-step, two-coil relay K1 of 3
volts.
If the sectioning voltage is continuously fed the potential at the terminals
of capacitor C3 increases.
Such voltage at pin 5 of integrated circuit U1B LM 2904 of module MD6 is
compared with a second reference voltage
V3 applied to pin 6 of the same integrated circuit which is provided by the
same above described circuit generating
the reference voltage. When the voltage at pin 5 overcomes said second
reference voltage after about four seconds
with a tolerance of + 0.5 seconds, the output of integrated circuit U1B
switches from "0" to "1", thus causing transistor
Q2 of the type 2N 2222 included in module MD9 to be saturated through
resistance R1 of 2.2 kohm and then the
second coil of relay K1 to be energized and the previously opened contacts
to be closed again.
Module MD8 is formed of half a section of integrated circuit U1A, i.e. the
operational amplifier U1A of the type LM 2904
having components R5, C2, D6 associated thereto and operating so as to set
to zero the voltage at the ends of capacitor
C3 during the pause between telephone calls.
TABLE 1
Characteristics of coil L1
Primary winding 40 turns
Secondary winding 90 + 44 turns
Primary inductance minimum 17 microhenry; maximum 49 microhenry
Secondary inductance minimum 85 microhenry; maximum 490 microhenry
Primary resistance 2.2 ohms
Secondary resistance 6.4 ohms
Core ferrite
EP 0 530 153 B1
Module MD13 is formed of the discharger TRISIL of the type TPA 130A used to
protect the intermediate line disconnecting
switch from electrical pulse discharges. In particular it is provided for
protecting the intermediate line disconnecting
switch from atmospheric discharges which could occur on the telephone lines.
It is placed in parallel with the
contacts of relay K1. The latter, which is included in module MD12, has the
function of sectioning and closing again
the telephone line according to control signals from modules MD9 and MD10,
as described above.
Finally module MD14 is formed of resistance R8 of 68 ohm andu watt and
capacitor C6 of 1 microfarad of the polyester
type.
The function thereof is of providing a voltage drop of about 6 volts a.c. on
the line when the latter is short circuited,
said voltage drop being necessary for the operation of the disconnecting
switch, while capacitor C6 connected in parallel
to resistance R8 has the function of bypassing all of sound and digital
signals with the minimum attenuation.
The intermediate line disconnecting switch allows for a back-control of the
line break at the user side as thoroughly
described with reference to Figs. 1, 2 and 3. High frequency apparatus of
the analogue and digital type (Mx, RSS,
WCR, negative impedance amplifier of the "ZN" type) should not operate
together. An alternate voltage of 70 volts rms
and a short circuit current of 80 mA are needed.
The control voltage of 70 volts rms has a frequency of 50 Hz. Therefore the
whole assembly has a high signal to noise
ratio.
In Fig. 4 there is shown a block diagram of an alternate embodiment of the
invention similar to the preceding embodiment
except for the particular configuration of the intermediate sectioning block
using different operating parameters. In
particular, the operating frequencies are reduced to the typical values of
the phonic band. In addition, it makes use of
a lower operating voltage for the sectioning and the re-making of the line
which is kept substatially constant between
18 and 20 Volt rms. Also such intermediate line sectioning device is
connected between the telephone line and the
user's line as the preceding one. The detection is carried out by supplying
the voltage of 18-20 Volt rms at 50-55 Hz
from the exchange during a varying time of about 2.5 seconds. As a result of
such signal the intermediate line sectioning
device opens the contacts for sectioning the telephone line of the user's
installation. The sectioning device is resposive
to such sectioning operation and generates a signal of varying frequency of
3000 ± 500 Hz which is added to said
sectioning voltage of 18-20 Volt at 50-55 Hz. Such signal is detected and
coded in the control centre of the telephone
exchange. The re-making of the sectioning contacts is due to an alternate
voltage fed from the exchange to the sectioning
device during a varying time of about 4 ± 0.5 seconds.
The frequency response of 3000 Hz fed from the sectioning device to the
telephone line is detected by a receiver of
the measuring equipment and transferred through an electronic interface to
the monitors of the operators in the control
and measurement centre.
In Fig. 4 module MD1' has the function of transforming the alternate voltage
of the telephone line to a d.c. voltage and
to block the d.c. component of the telephone line. Module MD2' generates a
main reference voltage of 2.5 volts and
two very stable secondary voltages of 1.37 and 1.98 volts.
Module MD3' generates the time constant necessary for sectioning and
re-making the line.
Module MD4' compares the voltage at its input with two reference voltages
causing after such comparison the two
outputs to be switched from logic 0 to 1 (0-1).
Module MD5' has the function of transforming the voltages at its two inputs
to one pulse having the length of some
milliseconds.
Module MD6' has the function of sectioning and re-making the telephone line
as a result of two pulses applied at its
inputs.
Module MD7' has the function of blocking the sectioning voltage preventing
it from being fed to the user and of protecting
the whole apparatus.
Module MD8' includes a buffer oscillator provided with current amplifier
capable to generate a sinusoidal signal.
Module MD9' has the function of resetting the sectioning device and to
re-make the telephone line when the user
receives a phone call.
As far as the process of detecting the line sectioning and the
interconnection of the modules is concerned it should be
noted that the alternate control voltage from the interface circuit located
in the central exchange is supplied through
the telephone line to module MD7', which prevents such voltage from reaching
the user, and to module MD1' which
rectifies it to a d.c. voltage which is applied to module MD2' thereby
generating three reference voltages, two of which
are applied to module MD4' and the third to module MD3'. Module MD4'
compares in turn the voltage from module
MD3' with the previously described reference voltages. As a result of such
comparison the two outputs of module MD4'
are switched from logic level 0 to 1, the first output after 2.5 seconds,
and the second outputs after 3 seconds. Such
outputs reach module MD5' which convertes them into two pulses (one for each
output) having the length of some
milliseconds, which are applied to module MD6' which in turn operates the
sectioning of the telephone line by the first
pulse and re-makes it by the second pulse. After the sectioning module MD6'
transfers the alternate control voltage to
module MD8 so that such voltage is supplied to a sinusoidal buffer
oscillator having a frequency of 3000 Hz ± 500 Hz
and a peak-to-peak amplitude of 3 volts which generates a signal fed through
modules MD6' and MD7' to telephone
EP 0 530 153 B1
line 4b.
The control voltage is taken from module MD1' and applied to module MD9'
which compares it with a reference voltage.
If the compared voltage is greater or equal to 22 volts, the logic levels of
the two outputs of the latter module are
switched so that one of them can reset the timer of module MD3' and the
other one re-makes the telephone line through
module MD6'.
Also this embodiment of the intermediate telephone line sectioning device of
the present invention has all of advantages
of the preceding embodiment such as the high sensitivity, the high
signal-to-noise ratio, the independence of the inner
electric parameters of the user's line, a. s. o.
The device according to the invention operates independently of the
electrical parameters of the internal user's line, i.
e. short circuit between wires a-b, low insulation between the latter,
foreign voltages on the telephone pair, psophometric
noise and pulse noise.
Claims
1. An intermediate telephone line sectioning device placed between the
distribution telephone line (4b) and the user's
line (7) for trouble shooting in the telephone line sections including:
- means (MD1, MD2, MD3) for stabilizing an alternating voltage from the
telephone exchange to a predetermined
value (V1),
- telephone line sectioning means (MD12) and an oscillator circuit (MD11)
for generating a sinusoidal voltage
confirming that the sectioning and the re-making of the telephone line has
occurred, characterized in that it
further comprises:
- capacitive means (MD4) including a capacitor (C3) which is charged by said
voltage from the telephone exchange
(V1),
- means (MD5) for generating first and second reference voltages (V2,V3),
- first switching means (MD6) for switching its output from digital logic
"0" to "1" when voltage (V1) on said
capacitive means (MD4) overcomes the second reference voltage (V3),
- second switching means (MD7) for switching its output from digital logic
"0" to "1" when said voltage (V1) on
capacitive means (MD4) overcomes the first reference voltage (V2),
- first active device (MD9) formed of a transistor (Q1) energizing a first
coil of a two-step relay (K1), under the
control of first switching means (MD6), when the latter switches its output
from "0" to "1" and thus producing
the sectioning of the telephone line of user (7) through the disconnection
of two contacts,
- second active device (MD10) including a second transistor (Q2) energizing
a second coil of the relais (K1),
under the control of second switching means (MD7), when the latter switches
its output from "0" to "1", thus
closing said contacts which disconnect the telephone line of the user (7),
- sectioning means (MD12) including first and second coil of the relais (K1)
and feeding (better conveying) the
oscillator (MD11) sinusoidal voltage confirming that the sectioning and the
re-making of the telephone line has
occurred together with said alternate voltage from the exchange,
- coupling means (MD14) including a capacitor (C6) transmitting the phonic
and digital signals with the minimum
attenuation, and that it also includes:
- resetting means (MD8) for setting to zero the value of the voltage at the
ends of said capacitive means (MD4)
charged by the alternate voltage from the exchange during the pause between
telephone calls.
2. The intermediate telephone line sectioning device for trouble shooting in
the telephone line sections of claim1,
characterized in that it also includes further protection means (MD13)
formed of a discharger.
3. The intermediate telephone line sectioning device for trouble shooting in
the telephone line sections of any of
preceding claims, characterized in that said coupling means (MD14) bypassing
the phonic and digital signals
includes besides said capacitor (C6) a resistance (R8) adapted to cause a
voltage drop when the user is short
circuited.
4. An intermediate telephone line sectioning device placed between the
distribution telephone line (4b) and the user's
line (7), for trouble shooting in the telephone line sections, including:
- means (MD1') for transforming the alternate voltage of the telephone line
to a d.c. voltage as well as for stabilizing
said voltage and for blocking the d.c. component of the telephone line,
- telephone line sectioning means (MD6') coupled with a buffer oscillator
circuit (MD8'),
EP 0 530 153 B1
characterized in that it further comprises:
- means (MD2') for supplying a main reference voltage and two very stable
secondary voltages,
- means (MD3') supplied with the main reference voltage for generating the
time constant necessary for sectioning
and re-making the telephone line,
- means (MD4') supplied with the secondary voltages for comparing the two
secondary voltages and supplying
at its two outputs, as a result of such comparison, two logic levels
switched from 0 to 1 with a delay relative
to said generated time constants, and
- means (MD5') for transforming the voltages at its inputs to a pulse of the
order of some milliseconds, the
succession of two of such pulses being applied to said telephone line
sectioning means (MD6') for operating
the sectioning and the re-making of the telephone line.
5. The intermediate telephone line sectioning device for trouble shooting in
the telephone line sections of claim 4,
characterized in that the operating voltage of the intermediate line
sectioning device is 18-20 volts rms at a frequency
of 50-55 Hz for an adjustable length of about 2.5 seconds.
6. The intermediate telephone line sectioning device for trouble shooting in
the telephone line sections of claims 4
and 5, characterized in that it includes a module (MD7') for preventing the
sectioning voltage from being fed to the
user and being adapted to assure and inherent protection of the whole
device.
7. The intermediate telephone line sectioning device for trouble shooting in
the telephone line sections of claims 4
to 6, characterized in that it includes a module (MD9') adapted to reset the
sectioning circuit and to re-make the
telephone line when the user receives a phone call.
8. A method of providing an intermediate telephone line sectioning employing
a device according to claims 1 or 5, in
which the detection is carried out by supplying a particular voltage from
the exchange during a varying time length
by means of which the intermediate line sectioning device opens the contacts
for sectioning the telephone line of
users's installation and generates a signal of varying frequency which is
added to said sectioning voltage, characterized
in that to detect the sectioning a main reference voltage and two very
stable secondary reference voltages
are generated, said two voltages being applied to a voltage comparator which
compares the input voltage with the
two reference voltages, the overcoming of the first reference voltage (V2)
occurring after an adjustable time period
(T1), while the overcoming of the second reference voltage (V3) occurring
after a further adjustable time period
(T2) generally different from the first period, thus causing the eventual
switching of the logic level of the outputs
from 0 to 1 with adjustable delay times, said outputs being applied to a
converter generating two pulses (one for
each output) having the length of some milliseconds, said two pulses being
the sectioning signal and the re-making
signal of the telephone line, respectively.
9. The method of providing an intermediate telephone line sectioning of
claim 8, wherein the main reference voltage
is 2.5 volt and the secondary reference voltages are 1.37 and 1.98 volts,
respectively.
10. The method of providing an intermediate telephone line sectioning of
claim 8, characterized in that the sectioning
signal operates a buffer oscillator generating a sinusoidal signal at 3000
Hz (± 500 Hz) which is supplied through
the telephone line to the exchange for its monitoring, and that it is
provided a comparison with a reference voltage
for the eventual restoring of the logic levels for resetting the timer and
re-making the telephone line when the user
receives a phone call.
Patentansprüche
1. Zwischentrennvorrichtung für Telefonleitung, welche zwischen der
Verteilertelefonleitung (4b) und der Teilnehmerleitung
(7) angeordnet ist, zur Störungssuche in den Telefonleitungsabschnitten
dient und aufweist:
- Einrichtungen (MD1,MD2,MD3) zur Stabilisierung einer Wechselspannung von
der Telefonzentrale auf einen
vorbestimmten Wert (V1),
- eine Telefonleitungs-Trenneinrichtung (MD12) und eine Oszillatorschaltung
(MD11) zur Erzeugung einer sinusförmigen
Spannung, die bestätigt, daß die Trennung und die Wiederherstellung der
Telefonleitung eingetreten
ist, dadurch gekennzeichnet, daß die Vorrichtung ferner aufweist:
- eine kapazitive Einrichtung (MD4) mit einen Kondensator (C3), der durch
die Spannung von der Telefonzen-
EP 0 530 153 B1
trale (V1) geladen wird,
- eine Einrichtung (MD5) zur Erzeugung einer ersten und zweiten
Bezugsspannung (V2,V3),
- eine erste Schalteinrichtung (MD6) zum Umschalten ihres Ausgangssignals
vom digitalen Logikwert "0" auf
"1", wenn die Spannung (V1) an der kapazitiven Einrichtung (MD4) die zweite
Bezugsspannung (V3) übersteigt,
- eine zweite Schalteinrichtung (MD7) zum Umschalten ihres Ausgangssignals
vom digitalen Logikwert "0" auf
"1", wenn die Spannung (V1) an der kapazitiven Einrichtung (MD4) die erste
Bezugsspannung (V2) übersteigt,
- eine erste aktive Vorrichtung (MD9), die aus einem Transistor (Q1)
besteht, welcher eine erste Spule eines
Zweistufenrelais (K1) unter der Steuerung der ersten Schalteinrichtung (MD6)
erregt, wenn die letztere ihr
Ausgangssignal von "0" auf "1" umschaltet, wodurch die Trennung der
Telefon-Teilnehmerleitung (7) durch
Trennung der zwei Kontakte hervorgerufen wird,
- eine zweite aktive Vorrichtung (MD10) mit einem zweiten Transistor (Q2),
der eine zweite Spule des Relais
(K1) unter der Steuerung der zweiten Schalteinrichtung (MD7) erregt, wenn
die letztere ihr Ausgangssignal
von "0" auf "1" umschaltet, wodurch die Kontakte geschlossen werden, die die
Telefon-Teilnehmerleitung (7)
abtrennen,
- eine Trenneinrichtung (MD12), welche die erste und zweite Spule des Relais
(K1) enthält und die Sinusspannung
des Oszillators (MD11) zuführt (besser fördert), was bestätigt, daß die
Trennung und Wiederherstellung
der Telefonleitung zusammen mit der Wechselspannung von der Zentrale
eingetreten ist,
- eine Kopplungseinrichtung (MD14) mit einem Kondensator (C6), welche die
phonetischen und digitalen Signale
mit minimaler Schwächung überträgt, und
- eine Rückstelleinrichtung (MD8) zur Rücksetzung des Spannungswertes an den
Enden der kapazitiven Einrichtung
(MD4) auf Null, welche durch die Wechselspannung von der Zentrale während
der Pause zwischen
Telefonanrufen geladen wird.
2. Zwischentrennvorrichtung für Telefonleitung zur Störungssuche in
Telefonleitungsabschnitten nach Anspruch 1,
dadurch gekennzeichnet, daß sie auch eine weitere Schutzeinrichtung (MD13)
umfaßt, die von einem Entlader
(discharger) gebildet wird.
3. Zwischentrennvorichtung für Telefonleitung zur Störungssuche in
Telefonleitungsabschnitten nach einem der vorangehenden
Ansprüche, dadurch gekennzeichnet, daß die Kopplungseinrichtung (MD14),
welche die phonetischen
und digitalen Signale umleitet, außer dem Kondensator (C6) einen Widerstand
(R8) enthält, der einen Spannungsabfall
hervorrufen kann, wenn der Teilnehmer kurzgeschlossen ist.
4. Zwischentrennvorrichtung für Telefonleitung, die zwischen der
Verteiler-Telefonleitung (4b) und der Teilnehmerleitung
(7) angeordnet ist, zur Störungssuche in den Telefonleitungsabschnitten,
welche aufweist:
- eine Einrichtung (MD1') zur Umformung der Wechselspannung der
Telefonleitung in eine Gleichspannung
sowie zur Stabilisierung dieser Spannung und zur Sperrung der
Gleichspannungskomponente der Telefonleitung,
- eine Telefonleitungs-Trenneinrichtung (MD6'), die mit einer
Puffer-Oszillatorschaltung (MD8') gekoppelt ist,
- dadurch gekennzeichnet, daß sie ferner aufweist:
- eine Einrichtung (MD2') zur Zuführung einer Hauptbezugsspannung und zwei
sehr stabiler Sekundärspannungen,
- eine Einrichtung (MD3'), die mit der Hauptbezugsspannung versorgt wird zur
Erzeugung der für die Trennung
und Wiederherstellung der Telefonleitung notwendigen Zeitkonstante,
- eine Einrichtung (MD4'), welcher die Sekundärspannungen zugeführt werden
zum Vergleich der zwei Sekundärspannungen
und zur Lieferung an ihren beiden Ausgängen als Ergebnis dieses Vergleichs
zweier logischer
Werte, die von 0 auf 1 mit einer auf die erzeugten Zeitkonstanten bezogenen
Verzögerung umgeschaltet
werden, und
- eine Einrichtung (MD5') zur Umformung der Spannungen an ihren Eingängen
auf einen Impuls in der Größenordnung
einiger Millisekunden, wobei die Folge von zwei solchen Impulsen auf die
Telefonleitungs-Trenneinrichtung
(MD6') gegeben wird zur Auslösung der Trennung und Wiederherstellung der
Telefonleitung.
5. Zwischentrennvorrichtung für Telefonleitung zur Störungssuche in den
Telefonleitungsabschnitten nach Anspruch
4, dadurch gekennzeichnet, daß die Betriebsspannung der
Zwischentrennvorrichtung für die Leitung 18 - 20 V
rms (effektiver Mittelwert) bei einer Frequenz von 50 - 55 Hz für eine
einstellbare Länge von etwa 2,5 Sekunden
beträgt.
EP 0 530 153 B1
6. Zwischentrennvorrichtung für Telefonleitung zur Störungssuche in den
Telefonleitungsabschnitten nach den Ansprüchen
4 und 5, dadurch gekennzeichnet, daß sie einen Modul (MD7') enthält, um zu
verhindern, daß die Trennspannung
zum Teilnehmer geliefert wird, und einen inneren Schutz der ganzen
Vorrichtung gewährleisten kann.
7. Zwischentrennvorrichtung für Telefonleitung zur Störungssuche in den
Telefonleitungsabschnitten nach den Ansprüchen
4 bis 6, dadurch gekennzeichnet, daß sie einen Modul (MD9') enthält, der
geeignet ist, die Trennschaltung
zurückzusetzen und die Telefonleitung wiederherzustellen, wenn der
Teilnehmer einen Telefonanruf empfängt.
8. Verfahren zur Erzeugung einer Telefonleitungs-Zwischentrennung unter
Anwendung einer Vorrichtung nach den
Ansprüchen 1 oder 5, hei welchem die Erfassung durchgeführt wird, indem eine
spezielle Spannung von der Zentrale
während einer veränderlichen Zeitspanne geliefert wird, mittels welcher die
Leitungszwischentrennvorrichtung
die Kontakte öffnet, um die Telefonleitung der Teilnehmeranlage abzutrennen,
und ein Signal veränderlicher
Frequenze erzeugt, welches zu der Trennspannung addiert wird, dadurch
gekennzeichent, daß zur Erfassung der
Trennung eine Hauptbezugsspannung und zwei sehr stabile
Sekundärbezugspannungen erzeugt werden, die zwei
Spannungen auf einen Spannungsvergleicher gegeben werden, welcher die
Eingangsspannung mit den zwei Bezugsspannungen
vergleicht, wobei das Übersteigen der ersten Bezugsspannung (V2) nach einer
einstellbaren
Zeitperiode (T1) erfolgt, während das Übersteigen der zweiten Bezugsspannung
(V3) nach einer weiteren einstellbaren
Zeitperiode (T2) erfolgt, die sich im allgemeinen von der ersten Periode
unterscheidet, wodurch das eventuelle
Umschalten des logischen Wertes der Ausgangssignale von 0 auf 1 mit
einstellbaren Verzögerungszeiten
bewirkt wird, wobei die Ausgangssignale auf einen Konverter gegeben werden,
der zwei Impulse (einen für jeden
Ausgang) mit der Länge einiger Millisekunden erzeugt, wobei die zwei Impulse
das Trennsignal bzw. das Wiederherstellungssignal
der Telefonleitung sind.
9. Verfahren zur Erzeugung einer Telefonleitungs-Zwischentrennung nach
Anspruch 8, bei welchem die Hauptbezugsspannung
2,5 V und die Sekundärbezugsspannungen 1,37 bzw. 1,98 V betragen.
10. Verfahren zur Erzeugung einer Telefonleitungs-Zwischentrennung nach
Anspruch 8, dadurch gekennzeichnet,
daß das Trennsignal einen Puffer-Oszillator betätigt, welcher ein
Sinussignal mit 3000 Hz (± 500 Hz) erzeugt, das
über die Telefonleitung zu deren Überwachung auf die Zentrale übertragen
wird, und daß ein Vergleich mit einer
Bezugsspannung für die eventuelle Wiederherstellung der logischen Werte zum
Zurücksetzen des Zeitgebers und
zur Wiederherstellung der Telefonleitung, wenn der Teilnehmer einen
Telefonanruf empfängt, durchgeführt wird.
Revendications
1. Dispositif de sectionnement intermédiaire pour ligne téléphonique
installé entre la ligne de distribution téléphonique
(4b) et la ligne de l'usager (7) pour la détection des problèmes dans les
sections de la ligne téléphonique, comprenant:
- des moyens (MD1, MD2, MD3) pour stabiliser un voltage alternatif du
central téléphonique à une valeur préétablie
(V1),
- un moyen de sectionnement pour ligne téléphonique (MD12) et un circuit
oscillateur (MD11) pour produire un
voltage sinusoïdal confirmant que le sectionnement et le rétablissement de
la ligne ont eu lieu, caractérisé en
ce qu'il comprend aussi:
- un moyen capacitif (MD4) comprenant un capaciteur (C3) qui est chargé par
ledit voltage du central téléphonique
(V1),
- un moyen (MD5) pour produire des premiers et deuxièmes voltages de
référence (V2, V3),
- un premier moyen de commutation (MD6) pour commuter sa sortie de "0"
logique digital à "1" quand le voltage
(V1) sur ledit moyen capacitif (MD4) dépasse le deuxième voltage de
référence (V3),
- un deuxième moyen de commutation (MD7) pour commuter sa sortie de "0"
logique digital à "1" quand le
voltage (V1) sur ledit moyen capacitif (MD4) dépasse le premier voltage de
référence (V2),
- un premier dispositif actif (MD9) formé par un transistor (Q1) qui fournit
l'énergie à une première bobine d'un
relais à deux phases (K1), sous le contrôle d'un premier moyen de
commutation (MD6), quand ce dernier
commute sa sortie de "0" à "1" et produisant ainsi le sectionnement de la
ligne téléphonique de l'usager (7) à
travers la déconnection de deux contacts,
- un deuxième dispositif actif (MD10) comprenant un deuxième transistor (Q2)
qui fournit l'énergie à une deuxième
bobine du relais (K1), sous le contrôle d'un deuxième moyen de commutation
(MD7), quand ce dernier
commute sa sortie de "0" à "1", en fermant ainsi lesdits contacts qui
déconnectent la ligne téléphonique de
EP 0 530 153 B1
l'usager (7),
- un moyen de sectionnement (MD12) comprenant la première et la deuxième
bobine du relais (K1) et alimentant
(ou mieux transportant) le voltage sinusoïdal de l'oscillateur (MD11) qui
confirme que le sectionnement et le
rétablissement de la ligne ont eu lieu ainsi que ledit voltage alternatif du
central,
- un moyen de couplage (MD14) comprenant un capaciteur (C6) qui transmet les
signaux phoniques et digitaux
avec le minimum d'atténuation, et comprenant aussi:
- un moyen de zérotage (MD8) pour mettre à zéro la valeur du voltage aux
extrémités dudit moyen capacitif
(MD4) chargé par le voltage alternatif du central pendant la pause entre un
appel téléphonique et l'autre.
2. Dispositif de sectionnement intermédiaire pour ligne téléphonique visant
à la détection des problèmes dans les
sections de la ligne téléphonique selon la Revendication 1, caractérisé en
ce qu'il comprend aussi un moyen de
protection ultérieur (MD13) constitué par un déchargeur.
3. Dispositif de sectionnement intermédiaire pour ligne téléphonique visant
à la détection des problèmes dans les
sections de la ligne téléphonique selon une quelconque des revendications
précédentes, caractérisé en ce que
ledit moyen de couplage (MD14) qui court-circuite les signaux phoniques et
digitaux comprend, en plus dudit
capaciteur (C6), une résistance (R8) qui produit une baisse du voltage quand
l'usager est en court-circuit.
4. Dispositif de sectionnement intermédiaire pour ligne téléphonique placé
entre la ligne téléphonique de distribution
(4b) et la ligne de l'usager (7) pour détecter les problèmes des sections de
la ligne téléphonique, comprenant:
- un moyen (MD1') pour transformer le voltage alternatif de la ligne
téléphonique en voltage direct ainsi que
pour stabiliser ledit voltage et bloquer le composant direct de la ligne
téléphonique,
- un moyen de sectionnement de la ligne téléphonique (MD6') couplé avec un
circuit oscillateur tampon (MD8'),
caractérisé en ce qu'il comprend aussi:
- un moyen (MD2') pour fournir un voltage de référence principal et deux
voltages secondaires très stables,
- un moyen (MD3') alimenté avec le voltage de référence principal pour
produire la constante de temps nécessaire
au sectionnement et rétablissement de la ligne téléphonique,
- un moyen (MD4') alimenté avec les voltages secondaires pour comparer les
deux voltages secondaires et
fournir à ses deux sorties, à la suite de ladite comparaison, deux niveaux
logiques commutés de 0 à 1 avec
un delai relatif aux dites constantes de temps produites, et
- un moyen (MD5') pour transformer les voltages à ses sorties en une
impulsion de l'ordre de quelques millisecondes,
la succession de deux de ces impulsions étant appliquée audit moyen de
sectionnement de la ligne
téléphonique (MD6') pour activer le sectionnement et rétablissement de la
ligne téléphonique.
5. Dispositif de sectionnement intermédiaire pour ligne téléphonique visant
à la détection des problèmes dans les
sections de la ligne téléphonique selon la Revendication 4, caractérisé en
ce que le voltage opératif du dispositif
de sectionnement intermédiaire pour la ligne est 18-20 volts rms avec une
fréquence de 50-55 Hz pour une durée
réglable de quelque 2,5 secondes.
6. Dispositif de sectionnement intermédiaire pour ligne téléphonique visant
à la détection des problèmes dans les
sections de la ligne téléphonique selon les Revendications 4 et 5,
caractérisé en ce qu'il comprend un module
(MD7') pour empêcher que le voltage de sectionnement soit fourni à l'usager
et étant adapté pour assurer une
protection intrinsèque du dispositif dans son ensemble.
7. Dispositif de sectionnement intermédiaire pour ligne téléphonique visant
à la détection des problèmes dans les
sections de la ligne téléphonique selon les Revendications de 4 à 6,
caractérisé en ce qu'il comprend un module
(MD9') adapté pour remettre à zéro le circuit de sectionnement et pour
rétablir la ligne téléphonique quand l'usager
reçoit un appel téléphonique.
8. Procédé pour accomplir le sectionnement intermédiaire de la ligne
télèphonique en utilisant un dispositif selon les
Revendications 1 ou 5, où la détection est accomplie en fournissant un
voltage spécial du central pendant une
période de temps variable, qui permet au dispositif intermédiaire de
sectionnement de la ligne d'ouvrir les contacts
pour sectionner la ligne téléphonique de l'installation de l'usager et de
produire un signal de fréquence variable
qui s'ajoute audit voltage de sectionnement, caractérisé en ce que, pour
détecter le sectionnement, un voltage
principal de référence et deux voltages secondaires très stables sont
produits, lesdites deux voltages étant appli-
EP 0 530 153 B1
qués à un comparateur de voltages qui compare le voltage d'entrée aux deux
voltages de référence, le dépassement
du premier voltage de référence (V2) ayant lieu après une période de temps
réglable (T1), alors que le
dépassement du deuxième voltage de référence (V3) ayant lieu après une
période de temps réglable ultérieure
(T2) qui d'habitude diffère de la première période, en produisant ainsi la
commutation finale du niveau logique des
sorties de 0 à 1 avec des delais réglables, lesdites sorties étant
appliquées à un convertisseur qui produit deux
impulsions (une pour chaque sortie) ayant la durée de quelques
millisecondes, lesdites deux impulsions étant,
respectivement, le signal de sectionnement et le signal de rétablissement de
la ligne téléphonique.
9. Procédé pour accomplir le sectionnement intermédiaire de la ligne
téléphonique selon la Revendication 8, où le
voltage principal de référence est 2,5 volts et les voltages secondaires de
référence sont, respectivement, 1,37
et 1,98 volts.
10. Procédé pour accomplir le sectionnement intermédiaire de la ligne
téléphonique selon la Revendication 8, caractérisé
en ce que le signal de sectionnement met en fonction un oscillateur tampon
qui produit un signal sinusoïdal
à 3000 Hz (± 500 Hz) qui est fourni à travers la ligne téléphonique au
central pour son contrôle, et en ce que une
comparaison est effectuée avec un voltage de référence pour rétablir
finalement les niveaux logiques nécessaires
à remettre à zéro le timer et rétablir la ligne téléphonique quand l'usager
reçoit un appel téléphonique.
EP 0 530 153 B1
12
EP 0 530 153 B1
13
EP 0 530 153 B1
14
EP 0 530 153 B1
15

 > ATX3S10=254+MS=V34,1
Bellissima, vado a 33600.
Era un paio di mesi che non facevo più prove con le stringhe, oggi mi sono
accorto che non le accetta nemmeno tutte quelle che avevo provato.
Ciao e grazie