Specifications

OfficeServ 7200 General Description Guide CHAPTER 3. OfficeServ 7200 Specifications
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Table 3.7 Electrical Characteristics of the PRI Trunk Line
Category Specification
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 Pair of twisted lines
Load resistance 120 Ω
Indicated (pulse) nominal peak volt-
age
3.00 V
Blank (non-pulse) peak voltage 0 ±0.300 V
The electrical characteristics of the Digital Line Interface (DLI) are shown in Table
3.8.
Table 3.8 Electrical Characteristics of the DLI Line
Category Specification
Transmission speed 144 kbits/s
Code AMI
Pulse type Typical AMI waveform
2.1.2 Signalling Type of the Dedicated Line
Electrical Characteristics of the WIM Interface
The electrical characteristics of the V.35 interface are shown in Table 3.9.
Table 3.9 Electrical Characteristics of the WIM Interface (V.35 Interface)
Category Specification
Maximum transmission speed 10 Mbits/s
Transmission code V.35 driver
Number of transmission lines 18
Characteristic resistance 100 Ω
Indicated (pulse) nominal peak voltage ±2 V
Input differential threshold ±80 MV