NEC Univerge SV8100 System Hardware Manual page 636

Issue 1.0
11.5
11 - 46
4-Port Digital Call Logging Unit
11.5.1 Description
The 4-Port Digital Call Logging Unit is a Universal Serial Bus (USB)
device designed to be installed in the "BackOffice" next to the
telephone system. These devices can be stacked on one PC (up to
12 per PC or 48 ports) or, if larger installations are required, multiple
PCs can be used with calls being stored on one central drive.
Connectivity is accomplished via parallel wiring tapped across the
same pair that feeds the D
software allows naming and mapping of each port independently.
The device does not interfere with communications between the PBX
and the digital telephone. It does not require USB power or a
connection to the PC to maintain the functionality of the telephone in
its normal manner.
The device meets the appropriate FCC and UL requirements
required for this type of communications device.
The device is soft up-loadable: the firmware and FPGA low-level
protocol decryption is uploaded from the PC driver and the 4-Port
Digital Call Logging Unit application at runtime. This allows easy
upgrade and enhancement of the product in the field as required.
11.5.2 Connection Configuration
The configuration connection is shown in
Call Logging Unit Connection
11.5.3 Connectors
The NEC 4-Port Digital Call Logging Unit USB recording device has
five connectors and four LED indicators:
One PC USB connector, from which the device derives its
power and streams all speech and control channel information
up to the host PC and NEC BackOffice application.
Four Digital Phone line connectors that passively tap across
the NEC D
the signaling on the line. The NEC 4-Port Digital Call Logging
Unit does not affect in any way the telephone operation with or
without connection of the host PC.
term
telephone. BackOffice Recorder
Configuration.
term
digital port and listen in high impedance mode to
Installing SV8100/SV8300 Optional Equipment
UNIVERGE SV8100/SV8300
Figure 11-35 4-Port Digital