Issue 3.0
SV9100 System Hardware Manual 9-43
11.5 4-Port Digital Call Logging Unit
11.5.1 Description
The 4-Port Digital Call Logging Units are Universal Serial Bus (USB)
devices installed in the BackOffice next to the telephone system.
Up to 12 of the 4-Port Digital Call Logging Units can be connected to a
single PC (providing 48 ports).
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
term
telephone. BackOffice
Recorder 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 normal telephone use.
The device meets the appropriate FCC and UL requirements 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 Figure 9-35 Digital Call Logging
Unit Connection Configuration.
Figure 9-35 Digital Call Logging Unit Connection Configuration
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