User Manual

AirLink Pro T1/E1 Rack Mount Installer’s Guide
Configuration
Rev. B - 1/97
3-11
8. Backup Master at a hub
To set the application for the local AirLink Pro T1/E1 Rack Mount, type the
following command at the AirLink Pro T1/E1 Rack Mount prompt:
AIRLINK PRO T1/E1> set application operand
where operand is a number in the range 1 to 6. If you do not specify a value, the
system assumes the default value: 4 (master unit in a point-to-point link). For
example, to set the application for the local AirLink Pro T1/E1 Rack Mount to 1
(primary master at a hub), type the following command at the AirLink Pro
T1/E1 Rack Mount prompt:
AIRLINK PRO T1/E1> set application 1
To set the application of the remote AirLink Pro T1/E1 Rack Mount, use the
command:
AIRLINK PRO T1/E1> remote set application operand
All units are shipped from the factory configured as master units in a point-to-
point link . You must configure one of the units in the pair as a slave so that the
system alignment procedures can be performed. Use your application plan to
determines how each unit will be configured.
The following sections describe the use of these applications in point-to-point
links, hubs, and repeaters.
Point-to-Point Link (Applications 4 and 6)
In a point-to-point link (Fig. 3-1), where one AirLink Pro T1/E1 Rack Mount
pair operates independently of any other pair, the burst synchronization timing
signal is derived from the internal clock of the designated master unit, and the
slave unit derives its synchronization from the received RF signal.
The master unit would be configured as a master unit in a point-to-point link
(application 4), while the unit at the other end would be configured as a slave
unit in a point-to-point link (application 6).