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Internal LAN/Modem Specifications 44
Internal LAN/Modem Specifications 5
The internal LAN/modem device connects to the system’s PCI bus. Specifications for the internal LAN/
modem are given in Table 5-10. The internal LAN/modem is built-in and is not field replaceable. The
internal modem is a global device.
Table 5-10. Internal LAN/Modem Specifications
Feature Specification
LAN Part Transmission media Non-shielded twisted-pair cable.
Transmission system Base-band method
Data transfer velocity 100 Mbps/10 Mbps
Network form Star
Max. segment length 100 m
Max. number of node/
segments
Dependent upon hub
Data link control
method
CSMA/CD
Message protocol Variable length frame
Synchronous method Pre-amp
Error correct method 32-bit CRC check
Frame addressing
method
Unique address
Group address
Simultaneous address
Data encode/decode
method
Manchester method (10 Mbps)
MLT-3 method (100 Mbps)
Chipset Built around Lucent
1646 DSP chipset
Modem Part Data rate
56 Kbps
*
Protocols • ITU-T V.90
• ITU-T V.34
• ITU-T V.32bis
• ITU-T V.32
• ITU-T V.22bis
Standards Hayes AT command set
Compression method • V.42bis data compression
• MNP Class 5 data compression
Error correction V.42 automatic correction
MNP Class 4
Compliance
countries
US / Canada / Japan / Belgium / Denmark / Finland / France /
Germany / The Netherlands / Italy / Norway / Sweden / Switzerland /
United Kingdom / Austria / Portugal / Ireland / Spain / Greece