Lucent Technologies PortMaster User Manual
Page 224
Overview of Synchronous V.25bis Dial-Up Connections
14-2
PortMaster Configuration Guide
requires only 8 bits. A 115.2Kbps DTE rate cannot properly support two 64Kbps
B channels because the terminal adapter is unable to buffer the excess data when the
incoming data for an ISDN line is 128Kbps.
Figure 14-1 shows an example of an ISDN or switched 56Kbps connection.
Figure 14-1 Example of an ISDN or Switched 56Kbps Connection
IRX Router
IRX Router
11820007
11820007
Boston
Miami
workstation 1
workstation 3
IRX Router
workstation 2
workstation 1
workstation 3
IRX Router
workstation 2
terminal
adapter
terminal
adapter
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