User Manual — TeleCorder with UpCorder Software —
V 2.17-B-US
9
2. Recording Process
When connected to standard telephone lines, the TeleCorder can automatically record the telephone
number called in or dialed out, time duration of the call and the voices of the conversation. You don’t need
to change your procedure for making or receiving your calls. Nevertheless, the following points should be
considered. When connected to phone lines, channels should be set to start/stop recording using the voltage
sensing mode, not the VAR mode (hardware set-up from
Recorder Settings
after selecting
Configure
from default “UpCorder” program screen). Date and time information is supplied by the clock in your PC.
If Caller ID numbers are not displayed, confirm with your telephone company that your phone lines
have the Caller ID feature enabled. Otherwise, there will not be caller phone numbers recorded and
displayed when managing the recordings. If you are connected to telephone handset audio, the recorder will
not show caller numbers and will only show dialed out numbers if the handset has standard DTMF tones
when dialing. Also check to be sure phone line channels are set for voltage sensing, not for VAR start/stop.
If Caller ID service is provided on the phone line, always wait to answer a call until after the second
ring so that the phone number from the calling party can be received and stored with the recording.
When channels are set to start and stop recording using voltage sensing, outgoing calls will not be
saved unless they are longer than 8 seconds and contain a minimum of 3 dialed digits (DTMF tones). This
feature minimizes false recordings and does not apply when using Voice Activated Recording (VAR). This
feature can be disabled from the
Recorder Settings
menu.
a. Setting for Phone Line or Voice Activated Recording (VAR)
When you first connect a new TeleCorder, default settings for all channels will be for Voice Activated
Recording (VAR). Channels connected to phone lines should have their start/stop mode changed to the
voltage sensing start/stop mode. In this mode, instead of monitoring audio levels, the recorder will monitor
for DC voltages on the selected inputs to indicate on-hook and off-hook status. The phone line voltage is
high when the circuit is not in use and will drop to a lower voltage when it is being used. Any channels set
for on-hook/off-hook voltage sensing that are not connected to a phone line will not show any recordings
due to the lack of the DC voltage changes that are required to initiate a recording.
If you connect any of the TeleCorder inputs to audio sources that do not have standard on-hook/off-
hook voltages, these channels must be set for voice activated recording (VAR).
b. VAR Settings
Recorder channels set for the VAR mode will detect the audio level on the channel (port) input to start
a recording. It will start recording when a preset audio level is reached (normal conversation levels), and
stop after the audio drops below this threshold (no sound other than weak background noise) for a preset
period of time. The length of quiet required for the recording to end is called “turn-off-delay”.
Phone Line Recording
Voice Activated Recording (VAR)
Requirement
to Start
Phone Line DC voltage lower
than
the
threshold,
o/a
20v
DC
Audio level on input is loud enough or louder than
preset threshold required to start recording
Requirement
to Stop
Phone Line DC voltage higher
than
the
threshold,
o/a
20v
DC
Audio level is lower than preset level required to
continue recording for the selected turn-off-delay
Suggested
Uses
Recording from standard
analog phone lines
1
．
Radio recording, broadcast or two-way
2
．
Meeting recording with amplified microphone
3
．
Audio picked up from handset or headset of
analog or digital telephone set (single or multi-
line phone)
4
．
Analog phone line recording where DC voltage
sensing cannot be used
5
．
Paging and Intercom audio
