Specifications

CHAPTER 3. OfficeServ 7200 Specifications OfficeServ 7200 General Description Guide
Page 3-4 © Samsung Business Communications
E1 Trunk Line
The electrical characteristics of the E1 trunk line comply with the ITU G.703 and
the G.704 standards.
Table 3.5 Electrical Characteristics of the E1 Trunk Line
Category Specification
Transmission speed 2048 kbit/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 (G.703) regardless of the codes.
Nominal and pulse 244 ns
Jitter of the I/O terminal Refer to the G.823.
Transmission media Pair of twisted lines
Load resistance 120 Ω
Indicated (pulse) nominal peak voltage 3.00 V
Blank(non-pulse) peak voltage 0 ± 0.300 V
The signalling specification and signalling method of the E1 trunk line should com-
ply with the ITU G.703 and G.704 standards.
Characteristics of the ISDN Interface Transmission
The electrical characteristics of the ISDN (BRI) interface comply with the ITU
I.430 and ETS 300 012 standards.
Table 3.6 Electrical Characteristics of the BRI Trunk Line
Category Specification
Transmission speed 192 kbit/s ±100 ppm
Code AMI
Pulse type Regular square wave : When indicating all valid signals,
comply with the mask (I.403) regardless of the codes.
Transmission media Pair of twisted lines
Load resistance 120 Ω
Indicated(pulse) nominal peak voltage 2.75 V
The electrical characteristics of the ISDN (PRI) interface should comply with the
ITU I.431 and ETS 300 011 standards.