
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
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