User's Manual

Installing and Using the AdminManager Software PRELIMINARY
7-30 InterReach Unison User Guide and Reference Manual
PN 8700-10
620003-0
Using the Uplink ALC Setting
Uplink automatic level control (UL ALC) circuitry within the RAU provides auto-
matic level control on high-power signals in the uplink path. This functionality is
required to prevent compression caused by a single or multiple wireless devices that
are in very close proximity to an RAU. Compression causes signal degradation and,
ultimately, bit errors, and should be prevented. Two settings are available to optimize
UL ALC performance:
• Single Operator and Protocol: Use when only one operator and protocol is
on-the-air within the Unison system’s configured and adjacent frequency bands.
• Multiple Operators and/or Protocols: Use when more than one operator and/or
protocol is present in the Unison system’s frequency and adjacent frequency
bands.
The following table shows the frequency bands that are adjacent to the bands that the
system is configured for.
Table 7-2 Frequency Bands Adjacent to System Configured Bands
System
Configuration Adjacent Bands
iDEN Cellular
Cellular iDEN
PCS AD PCS B
PCS DB PCS A, PCS E
PCS BE PCS D, PCS F
PCS EF PCS B, PCS C
PCS FC PCS E
GSM –
EGSM –
DCS 1 DCS 2
DCS 2 DCS 1, DCS 3
DCS 3 –
UMTS 1 UMTS 2, UMTS 3
UMTS 2 UMTS 1, UMTS 3
UMTS 3 UMTS 1, UMTS 2