Samsung OfficeServ 7100 Series - Table 3.5 Electrical Characteristics of the PRI Trunk Line; Table 3.6 Electrical Characteristics of the DLI Line

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Table 3.5 Electrical Characteristics of the PRI Trunk Line
Categories
Specifications
Transmission speed
2048 Kbits/s ±50 ppm
Code
High Density Bipolar of Order 3 (HDB3)
Pulse type
Regular square wave: When indicating all valid signals,
comply with the mask (I.403) regardless of the codes.
Nominal and pulse
244 ns
Transmission media
A pair of twisted lines
Load resistance
120 
Indicated (pulse) nominal peak voltage
3.00 V
Blank (non-pulse) peak voltage
0 ±0.300 V
The electrical characteristics of the Digital Line Interface (DLI) are shown in the table
below:
Table 3.6 Electrical Characteristics of the DLI Line
Categories
Specifications
Transmission speed
384 Kbits/s
Code
Alternate Mark Inversion (AMI)
Pulse type
Typical AMI Waveform