Data Sheet
USE2.OB
Interface Attachment for Local Battery Telephony
Interface Attachment to Switch on Local Battery (LB)
USE2.OB
Lines and Generate Ring Pulses
At a Glance:
Date:
23.03.2009
Fig. USE2.OB (L- No. 2.730)
• Switching on LB lines
• Renewal of ring power pulses in LB lines
Page:
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Author: HS Document-No.:
© 2008 ProCom, All rights and technical changes reserved
DB_USE2.OB_2730_1
Data Sheet
USE2.OB
Interface Attachment for Local Battery Telephony
The USE2.OB interface attachment converts the digit codes used in the system
into allocated LB call signals and vice versa.
Voice monitoring can be set in this model. When the option for voice monitoring
is set, after a pause in conversation of 60 seconds, the conversation connection
is terminated.
The area of use for the USE2.OB attachment is train stations, stops or routes
which are not occupied by a traffic superintendent anymore and at which a signalling system is not required. The digital exchange system DVS-21 with
USE2.OB interface transfers connections to occupied electronic control signal
boxes or to control centres.
Function Description:
LB
PABX
LK 1
LK n
Remote
PA,
DRWL,
Radio
LK 2
PABX
DVS-21
2DA
CPU1
SV01
GS
N
F
L
USE2
DVS-21
NFLÜ
USE2
4FTR
E1
LB
Application example LB line forwarding
Using the USE2.OB interface the DVS-21 can forward calls originating from a local
battery telephone (LB telephone).
One USE2.OB attachment is required per LB device (LB line in 2-wire technology).
Incoming and outgoing calls can be transferred over multiple DVS-21 systems using
E1 connections (4FTR carrier card with E1 attachment).
Date:
23.03.2009
Page:
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© 2008 ProCom, All rights and technical changes reserved
Author: HS Document-No.:
DB_USE2.OB_2730_1
Data Sheet
r
g
USE2.OB
Interface Attachment for Local Battery Telephony
Function Description:
One LB line in 2-wire technology can be connected per USE2.OB interface (4wire technology only with double the number of interfaces).
The following functions are active for LB operation:
- Call recognition
- Call generation
- Voice recognition
- Codec + filter
The interaction of the individual functions is illustrated in the following block diagram.
USE2.OB
+5V
Ruferkennung
Call Recognition
Ruferzeugung
Call Generation
a
OB
b
Cocec + Filter
Codec and Filte
I/O
+/-
Sprach-
Voice
erkennung
Reco
nition
A
D
S
C
O
e
N
u
e
T
R
u
O
n
L
g
GND
t
-5V
KS
P
r
C
BUS
M
-48V
+0V
Frontplatten- LED
Front Plate LED
On
Al
Block diagram USE2.OB
Date:
23.03.2009
Page:
3/6
Author: HS Document-No.:
© 2008 ProCom, All rights and technical changes reserved
DB_USE2.OB_2730_1
Data Sheet
USE2.OB
Interface Attachment for Local Battery Telephony
Call Recognition
The attachment, call recognition, receives the incoming dialling information.
The dialling information is galvanically separated and adapted through an optocoupler, passed to the microcontroller (control unit) and there processed.
Call Generation
The attachment, call generation, is switched through relay contacts over the LB
line and generates the dialling pulses controlled by the processor.
Voice Recognition
The attachment, voice recognition, is used by the microcontroller to determine the
presence of voice signals. Voice signals detected inside a time window cause the
connection to be maintained. If there is no speech inside of the time window then
the connection is terminated.
Sensitivity and time can be configured using the ICS software.
Codec + Filter
The main component of the codec/filter attachment is a programmable PCM codec/filter building block. Using this the sending and receiving level can be configured. It also suppresses the return transmission of the voice signal of the dialogue
partner. This is realized through a configurable filter unit and out-of-phase overloading of the return channel. This effectively prevents feedback.
The sending and receiving level as well as the filter values can be configured using the ICS software.
Date:
23.03.2009
Page:
4/6
© 2008 ProCom, All rights and technical changes reserved
Author: HS Document-No.:
DB_USE2.OB_2730_1
Data Sheet
USE2.OB
Interface Attachment for Local Battery Telephony
The Front Plate Symbols and their Meaning:
The System Blinker
Addressing from processor taking place
I/O Input/Output
BUS output works as push-push operation with the system
blinker
BUS input works as push-pull operation with the system blinker
Receiving
Incoming call signal / voice signal recognized
Sending
Outgoing call signal
On Status Display
Connection exists
Alarm Error Message
Date:
23.03.2009
Signals an invalid LB call signal
Page:
5/6
Author: HS Document-No.:
© 2008 ProCom, All rights and technical changes reserved
DB_USE2.OB_2730_1
Data Sheet
USE2.OB
Interface Attachment for Local Battery Telephony
Technical Data:
Operating Voltage: 48 V
Operating Voltage: +/-5 V (control)
Operational Current (48 V): 35 mA
Operational Current (+5 V): 30 mA
Operational Current (-5 V): 12 mA
Temperature Range: 0 °C to 45 °C
Weight: 230 g
Installation Height: 3HE
Installation Widht: 6TE
Date:
23.03.2009
Page:
6/6
© 2008 ProCom, All rights and technical changes reserved
Author: HS Document-No.:
DB_USE2.OB_2730_1
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