Operation Mode Lb - Procom DVS-21 User Manual

User Guide
DVS-21

Operation mode LB

LB = Local Battery, operation by means of a local battery without central supply (crank and field phones)
USE2 Firmware 2104e
DVS Firmware >= 7.62
Activation, connection and tunneling of LB party lines via two modules USE2.

LB Ringing tone recognition

LB Ringing tone recognition, Regeneration

Voice connection

LB Repeater mode
Recommended programs:
LB connection
LB forwarder
LB splitter (Repeater mode)
Info 0 (without function)
Byte 1 is calculated by the addition of the following values: (see also Hybrid balance)
Hybrid amplification 0 - 31
Filter active/bypass 32
Byte 1 (Hybrid)
negative overlap
positive overlap
Call level Value range 60 - 95 (1,9 - 4,6W at 1 kOhm) (Default 80 (3,2W at 1 kOhm)
switch-off time after voice detection
Timer count
Value 255 prevents a switch-off (Dedicated line)
Range (AF) Response threshold of voice detection
AF frequency 0 (without function)
Hybrid balance (starting from the right in the circuit diagram)
The hybrid is used to separate the transmission and reception signal in 2-wire connections.
Bi-Quad Filter Phase correction of lower to mid frequencies
P/Z Filter Phase correction of mid to high frequencies (1 = default)
Hybrid amplification
Level of the hybrid circuit
Polarization Positive or negative overlap
Level incoming
AF input amplification (from external device to module)
Level outgoing AF output attenuation (from module to external device)
In the case of the option being active, a change in the filter always triggers the
Auto Online Level transmission as Online level automatically! This is merely an aid to filter adjustment.
It is of no relevance in terms of the function!
02/2018 • V.1.0 • L. Wolle
© 2017 ProCom
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