User guide

Canopy System User Guide Configuring an SM for the Destination
pmp-0229 (Mar 2013)
297
External Filters Delay
This parameter is present in only 900-MHz modules and can have effect in only those that have
interference mitigation filter(s). If this value is present, leave it set to 0, regardless of whether the
SM has an interference mitigation filter.
Installation Color Code
With this feature enabled on the AP and SM, operators may install and remotely configure SMs
without having to configure matching color codes between the modules. While the SM is
accessible for configuration from above the AP (for remote provisioning) and below the SM (for
local site provisioning), no user data is passed over the radio link. SMs with Installation Color
Code enabled will first try any configured Color Code values first, then will use the Installation
Color Code feature as a last result to connect to the AP. The status of the Installation Color Code
can be viewed on the AP Eval web GUI page, and when the SM is registered using the Installation
Color Code the message “SM is registered via ICC – Bridging Disabled!” is displayed in red on
every SM GUI page. The Installation Color Code parameter is configurable without a radio reboot
for both the AP and SM. If an SM is registered via Installation Color Code and the feature is then
disabled, operators will need to reboot the SM or force it to reregister (i.e. using the Rescan APs
functionality on the AP Eval page).
Large VC data Q
Certain applications such as video Surveillance cameras operate by sending bursts of IP traffic
upstream. Some systems will send short bursts of packets at over 50 Mbps and then be idle for
some period of time and then send another burst of data.
In order for the RF interface of a radio to accommodate these bursts of traffic, there is a
configurable parameter on SM radios as well as BH Master and Slave radios to operate with a
large input queue at the radio’s data VC. This large queue allows packets which arrive at a rate
greater than the radio link capacity to be stored in this deep queue until the radio is ready to
transmit them. The queue size has been optimized to allow large packets to be stored just long
enough so that there is always data available to be transmitted, but not large enough to cause
packets to sit in a queue for a second or more.
Configuration of this parameter is shown on the Configuration => Radio web page on the SM,
BHM and BHS. Operators should enable Large VC data Q on the BHM for downlink traffic or
enable it on the BHS for uplink traffic.
If an operator is experiencing packet loss in the uplink due to bursting IP traffic and the
overalltraffic rate is less than or equal to the uplink capacity of the radio system, then the large VC
data Q should be enabled.
Transmitter Output Power
Nations and regions may regulate transmitter output power. For example
• Both 900-MHz and 5.7-GHz modules are available as connectorized radios, which require the
operator to adjust power to ensure regulatory compliance.