User Guide
Table Of Contents
- Cambium
- PMP 450 Planning Guide
- Accuracy
- Copyrights
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- Restrictions
- License Agreements
- High Risk Materials
- Safety and regulatory information
- Contents
- List of Figures
- List of Tables
- About This Planning Guide
- PMP support website: http://www.cambiumnetworks.com/support
- Cambium main website: http://www.cambiumnetworks.com/
- Sales enquiries: solutions@cambiumnetworks.com
- Email support: support@cambiumnetworks.com
- Telephone numbers:
- For full list of Cambium support telephone numbers, see:
- http://www.cambiumnetworks.com/support/contact-support
- Address:
- Chapter 1: Planning considerations
- Regulatory planning
- Network migration planning
- Site planning
- Link planning
- Analyzing the RF Environment
- Selecting Sites for Network Elements
- Diagramming Network Layouts
- Grounding and lightning protection
- Configuration options for TDD synchronization
- Data network planning
- Security planning
- Isolating APs from the Internet
- Managing module access by passwords
- Filtering protocols and ports
- Port Lockdown
- Isolating SMs
- Filtering management through Ethernet
- Allowing management from only specified IP addresses
- Configuring management IP by DHCP
- Planning for airlink security
- Planning for RF Telnet Access Control
- Forwarding Downlink PPPoE PADI packets
- Planning for RADIUS integration
- Planning for SNMP security
- Ordering components
- Chapter 2: Legal information
- Cambium Networks end user license agreement
- Acceptance of this agreement
- Definitions
- Grant of license
- Conditions of use
- Title and restrictions
- Confidentiality
- Right to use Cambium’s name
- Transfer
- Updates
- Maintenance
- Disclaimer
- Limitation of liability
- U.S. government
- Term of license
- Governing law
- Assignment
- Survival of provisions
- Entire agreement
- Third party software
- Hardware warranty
- Limit of liability
- Cambium Networks end user license agreement
- Chapter 3: Reference information
PMP 450 Planning Guide
Figure 1 Line Of Sight Diagram
Whereas multi-pathing degrades a link in some technologies (FSK, for example), OFDM can often use multi-
pathing to an advantage to overcome nLOS, especially in cases where the Fresnel zone is only partially blocked
by buildings, “urban canyons”, or foliage. OFDM tends to help especially when obstacles are near the middle of
the link, and less so when the obstacles are very near the SM or AP.
However, attenuation through walls and trees is substantial for any use of the 2.4/3.5/5.4/5.8 GHz frequency
bands. Even with OFDM, these products should not be expected to penetrate walls or extensive trees and
foliage.
Typical deployment
The PMP 450 Series consists of Access Point Modules and Subscriber Modules. The radio link operates on a
single frequency channel in each direction using Time Division Duplex (TDD).
Applications for the PMP 450 Series include:
• High throughput enterprise applications
• nLOS video surveillance in metro areas
• Urban area network extension
• Network extension into areas with foliage
Greenfield deployment
The PMP 450 Series equipment may be deployed as a standalone network deployment offering a high-speed
access network.
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pmp-0047 (March 2014)