User guide

Canopy
®
OFDM Backhaul Solutions
Backhaul Solutions for the Most Challenging Locations and Applications
7. Will the OFDM Backhaul Radios interfere with my Canopy access network?
Flexibility is a key value driver of Canopy solutions. The OFDM Backhaul radios have been designed to
interoperate with other Canopy AP clusters operating at same frequency band. There are certain
considerations that network operators must make in the installation, including frequency allocation,
vertical separation and angular direction of the modules. Refer to the User Guide for co-location
information.
8. How do the OFDM Backhaul radios avoid interference from other devices nearby?
At initialization, the backhaul monitors the available frequency channels to find a channel that is clear of
interference. In operation the backhaul continuously monitors the spectrum (400 times a second) and
when interference is encountered the radio automatically switches to the cleanest channel.
9. When do I use the different backhaul links?
The Canopy System has been developed to enable network design that meets the needs of the network
users. Motorola has expertise that can help develop a profile of the current and estimated future demand
of the network to provide sufficient capacity to meet service demands. In many LoS applications, the 10
Mbps and 20 Mbps backhauls meet the point-to-point communication requirements. The increased
bandwidth of the 30/60 and 150/300 Mbps backhaul radios enables operators to achieve a reliable & high
bandwidth link in challenging nLoS/NLoS conditions to:
• Interconnect campus buildings and remote branch offices
• Extend PBX T1/E1 voice circuits
• Establish temporary/backup links for disaster recovery
• Extend video surveillance beyond existing fiber/coax wired infrastructure
• Connect enterprise voice and data
• Reach remote Canopy Access Point Clusters
10. What are the differences between the 30/60 and 150/300 Mb BH Power over Ethernet?
The 30/60 Mbps support 100BaseT while the 150/300 support 100/1000BaseT. The 30/60 Mbps BH is
powered via two pairs of the Ethernet drop cable; the primary power is supplied on Pin 8 (Pin 7 return)
while supplementary power for the longer cable runs is supplied on Pin 5 (Pin 4 Return). The
supplementary pair is also used for ODU signaling. The 150/300 is powered via four data pairs of the
Ethernet drop cable.
11. Can I source and use my own PoE adapter with the 30/60 or 150/300 Mbps Backhaul?
No. The backhaul uses a non-standard PoE configuration and failure to use the PIDU could result in
equipment damage and will invalidate the safety certification and may cause a safety hazard.
Note: The Canopy CMM should not be used to power the OFDM BH radios.
12. How do the OFDM Backhaul radios integrate into my data network?
The backhaul acts as a transparent bridge between two segments of your network. In this sense, it can
be treated like a virtual wired connection between the two buildings. The backhaul forwards 802.3
Ethernet packets destined for the other part of the network and filters packets it does not need to forward.
The system is transparent to higher-level management systems such as VLANs and Spanning Tree.
13. Can I use Apple Macintosh OS X to control and monitor the OFDM Backhaul radio?
Yes, but there are some restrictions. Mozilla 1.6 or higher is recommended. There are some issues with
Internet Explorers 5.2(IE) and Safari, which could mislead the user.
Issue 4, March 2005 Page 19 of 30