User guide

Canopy System User Guide Configuring an AP for the Destination
pmp-0229 (Mar 2013)
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Sector ID
Specify a number in the range 1 to 6 to associate with this AP. The Sector ID setting does not
affect the operation of the AP. On the AP Evaluation tab of the Tools page in the SM, the Sector
ID field identifies the AP that the SM sees. The following steps may be useful:
• Assign a unique Sector ID to each sector in an AP cluster.
• Repeat the assignment pattern throughout the entire system.
Only Allow Subscribers with Version 9.5 or Above
For feature compatibility, an operator may enforce that all SMs in a sector are running Software
Release 9.5 or above. If an SM that is running pre-9.5 software tries to register to an AP with this
option enabled, it will be rejected and an SM registration failure trap will be sent indicating why
the SM was not allowed to register.
Max Range
Enter a number of miles (or kilometers divided by 1.61, then rounded to an integer) for the furthest
distance from which an SM is allowed to register to this AP. Do not set the distance to any greater
number of miles. A greater distance
• does not increase the power of transmission from the AP.
• can reduce aggregate throughput. See Table 24 on Page 100.
Regardless of this distance, the SM must meet the minimum requirements for an acceptable link.
If the AP is in cluster, then you must set this parameter on all other APs in the cluster exactly the
same, except as described in the NOTE admonition below. The default value of this parameter is 2
miles (3.2 km).
For APs in the non 900-MHz frequency band ranges, although the typical maximum range where
an SM is deployed with a reflector is 15 miles (24 km), you can set this parameter to as far as 30
miles (48 km). Without increasing the power or sensitivity of the AP or SM, the greater value
allows you to attempt greater distance where the RF environment and Fresnel zone
6
are especially
clear.
For the PMP 400 Series AP, the typical maximum range achievable depends on the operation
mode as follows:
• 5 miles (8 km) in 1X operation
• 2.5 miles (4 km) in 2X operation
• 1.25 miles (2 km) in 3X operation
A value of 15 for this parameter decreases the number of available data slots by 1. With a higher
value, the number is further decreased as the AP compensates for the expected additional air
delay.
6
See Noting Possible Obstructions in the Fresnel Zone on Page 136.