CHAPTER 3. OfficeServ 7400 Specifications
3-8
© Samsung Business Communications
3.2.1.3. Signalling Type of the LAN
y
The electrical characteristics of the 10 Base-T interface, which comply with the
IEEE802.3 standards, are shown in the table below:
Table 3.13 Electrical Characteristics of the LAN Interface (10 Base-T)
Categories
Specifications
Transmission speed
10 Mbps
Transmission code
Manchester coding.
When the transmission data bit is ‘0’, the higher level of
the middle bit is inversed into the lower level. When the
transmission data bit is ‘1’, the lower level of the middle
bit is inversed into the higher level.
Access control method
Carrier Sense Multiple Access/Collision Detect
(CSMA/CD)
Transmission media
UTP (Unshielded Twisted Pair) CAT3, CAT4, CAT5,
STP (Shielded Twisted Pair)
Number of UTP pairs
2 pairs
Characteristic resistance
100
Ω
Cable thickness
Diameter: 0.51 mm (24 AWG), External diameter: 5 mm
y
The electrical characteristics of the 100 Base-Tx, which comply with the IEEE802.3u
standards, are shown in the table below:
Table 3.14 Electrical Characteristics of the LAN Interface (100 Base-Tx)
Categories
Specifications
Transmission speed
100 Mbps
Transmission code
4B/5B+MLT-3
- 4bit/5bit converts the 4-bit data into 5-bit data and encodes the data
on the physical layer. Multi Level Transmission-3 (MLT-3) encodes
transmission data into 3 levels (high, middle, and low).
Access control type
CSMA/CD
Transmission media
UTP CAT5, STP
Number of UTP pairs
2 pairs
Characteristic resistance
100
Ω
Cable thickness
Diameter: 0.51 mm (24 AWG), External diameter: 6 mm
