User's Guide

1-2 System description
Internet BWA System 3200 NTXXXXXX Rel 3.0 Draft October 2000
For systems with a specific capacity (for example, a 4 x E1 capacity), the
activation of a new tributary within that capacity is software programmable,
either locally or remotely. The activation of a new tributary within an existing
capacity does not cause any errors to the existing traffic. Inactive tributaries do
not cause alarms.
Frequency plan
Frequency plans are in accordance with:
• current ITU-R recommendations and annexes as applicable for
international products
• FCC rules, part 101 (as amended on October 1, 1997, replaces parts 21 and
94)
• Industry Canada (SRSP-314.5, SRSP-318.5, SRSP-321.8) for North
American products
Table 1-2 lists the frequency plans.
System features
The Internet BWA System 3200 provides:
• scalable channel capacity to precisely match traffic volume
• scalable channel selection (digital synthesizer set in 250 kHz steps)
• selectable AMI or B8ZS line coding for DS1 signals (E1 signals use HDB3
coding only)
• selectable framing type (Unframe, Frame or ESF for DS1 signals)
• hand-held wireless terminal to perform configuration, maintenance, and
performance monitoring of the outdoor unit (ODU)
• receive signal strength indicator (RSSI) on the outdoor unit to guide
service personnel in antenna alignment
• forward error correction (FEC) and link ID codes
• common ODU and frequency synthesizer to minimize the number of spare
units and cost
• simple installation and maintenance from the “twist and lock” design of the
outdoor unit.
Table 1-2
Frequency plans
Frequency
band
15 GHz 18 GHz 23 GHz 24/26 GHz 28/29 GHz 31 GHz 38 GHz
Frequency
range (MHz)
14.4- 15.35 17.7- 19.7 21.2- 23.6 24.25- 26.5 27.5- 29.5 31.0- 31.3 37.0- 40.0