OfficeServ 7100 Service Manual© SAMSUNG Electronics Co., Ltd. 1-11Table 1.10 Electric Characteristics of PRI C.O. line (Continued)Category DescriptionTransfer Media Twisted-pair lineLoad Resistance 120 ΩDisplay(Pulse) Nominal Peak Voltage 3.00 VBlank(No-Pulse) Peak Voltage 0 ±0.300 VThe electric characteristics of the Digital Line Interface(DLI) are listed in the table below:Table 1.11 Electric Characteristics of DLI LineCategory DescriptionTransfer Rate 144 kbits/sCode AMIPulse Type Typical AMI WaveformLAN SignalingIn 10 Base-T, the LAN signaling satisfies IEEE802.3 standard and its electric characteristicsare listed in the table below:Table 1.12 Electric Characteristics of LAN Interface (10 Base-T)Category DescriptionTransfer Rate 10 Mbit/s ±50 ppmTransfer Code Manchester encodingAccess Control Method CSMA/CDTransfer Media UTP CAT3, CAT4, CAT5, STPNumber of UTP Pairs Two PairsCharacteristic Resistance 100 ΩCable Thickness Diameter 0.51 mm(24 AWG), External Diameter 5 mmIn 100 Base-T, the LAN signaling satisfies IEEE802.3u standard and its electric characteristicsare listed in the table below:Table 1.13 Electric Characteristics of LAN Interface (100 Base-Tx)Category DescriptionTransfer Rate 100 Mbit/s ± 50 ppmTransfer Code 4B/5B+MLT-3(4 bit/5 bit) converts 4-bit-data into 5-bit data in aphysical layer and encodes the data. Multi-LevelTransmission-3(MLT-3) encodes transmission data intothree levels(high, medium, low).
