HP 200 Series Services And Applications page 233

ISDN Wide Area Network Design: Dry Creek Joint Elem. School District
Performance
Performance
ISDN provides clear 64-Kbit/s channels for each point-to-point connection.
This bandwidth will meet Dry Creek's needs for approximately two to three
years. Basic-rate terminal adapters that provide inverse multiplexing are
becoming available. The inverse multiplexing feature will allow both B
channels to be combined for 128 Kbit/s of bandwidth. This provides a growth
path that will be more than adequate for Dry Creek's needs for at least three
years.
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