POTSwap v1.00 User Manual JA16-UM
Page 10 Rev: P09 Date: 01/03/18
© Copyright 2020 Janus Remote Communications
Specifications subject to change without notice
All Rights Reserved See website for latest revision. Not intended for life support applications.
4. Configuration continued
CONFIGURATION PARAMETERS continued
GSM TTY Mode
1
0-1
TTY MODE enable
0 = TTY mode disabled
1 = TTY mode enabled
Improves in-band DTMF transport under
certain circumstances
SLIC ADC Gain
2
0-8
Sets outbound audio gain during the initial outbound DTMF
dialing. Corrects for distortion using some auto dialers.
SLIC DAC Gain
4
0-8
Sets inbound audio gain. Should be set at 4.
Loop Current Limit
4
2
0-7
Sets the telephone loop current limit, from 20mA (0) to 41mA (7)
in 3mA steps. Default is 26mA (2).
Loop Closure Sensing Type
3
0
0-1
Sets loop closure (off-hook) sensing type.
0 = current sensing
1 = voltage sensing
Use 0 (current sensing) for applications using ringer loads of
REN=1 or less. Use 1 (voltage sensing) for ringer loads of
REN>1, up to REN=5.
Loop Closure Threshold
3
8
0-63
Sets loop closure (off-hook) sensing threshold.
Current sensing: 1.27 ma/unit (e.g. ‘8’=10.26 mA)
Voltage Sensing: 1.45 V/unit (e.g. ‘10’=14.50 V)
Recommended settings:
REN<=1: Current sensing; threshold=8 [default]
For REN>1 to REN=5: Voltage sensing; threshold=10
Notes:
1. Available on firmware versions 140725 and higher
2. 12 on firmware versions 131011 and lower
3. Available on firmware versions 140207 and higher
4. Available on firmware 150908 and higher.
5. Available on firmware 160714 and higher.
D – DEFAULTS Command:
Entering the ‘D’ command will change all of the settings back to the factory defaults. These settings will not be
saved unless the ‘X’ Exit and Save command is issued. Older versions of firmware will request that the POTSwap
be restarted to effect the changes; current versions will restart automatically.
X – EXIT AND SAVE Command:
Entering the ‘X’ command will save any changes made using the ’M’ Modify or ‘D’ Defaults commands. This will
also exit the menu system and requires that the POTSwap be restarted either by pressing the RESET push button
or by un-powering and re-powering the unit.
Q – QUIT AND DISCARD Command:
Entering the ‘Q’ command will discard any changes made using the ’M’ Modify or ‘D’ Defaults commands. This
will also exit the menu system and requires that the POTSwap be restarted either by pressing the RESET push
button or by un-powering and re-powering the unit.
